./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 7e1ff0e6 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-?-7e1ff0e [2023-02-14 22:35:56,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 22:35:57,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 22:35:57,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 22:35:57,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 22:35:57,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 22:35:57,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 22:35:57,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 22:35:57,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 22:35:57,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 22:35:57,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 22:35:57,036 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 22:35:57,037 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 22:35:57,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 22:35:57,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 22:35:57,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 22:35:57,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 22:35:57,042 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 22:35:57,043 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 22:35:57,044 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 22:35:57,048 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 22:35:57,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 22:35:57,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 22:35:57,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 22:35:57,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 22:35:57,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 22:35:57,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 22:35:57,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 22:35:57,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 22:35:57,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 22:35:57,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 22:35:57,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 22:35:57,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 22:35:57,061 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 22:35:57,062 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 22:35:57,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 22:35:57,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 22:35:57,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 22:35:57,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 22:35:57,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 22:35:57,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 22:35:57,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 22:35:57,086 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 22:35:57,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 22:35:57,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 22:35:57,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 22:35:57,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 22:35:57,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 22:35:57,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 22:35:57,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 22:35:57,088 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 22:35:57,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 22:35:57,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 22:35:57,090 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 22:35:57,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 22:35:57,090 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 22:35:57,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 22:35:57,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 22:35:57,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 22:35:57,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 22:35:57,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:35:57,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 22:35:57,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 22:35:57,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 22:35:57,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 22:35:57,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 22:35:57,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 22:35:57,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 22:35:57,092 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 22:35:57,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 22:35:57,092 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 22:35:57,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 986945cc1d8674c803a19893f7d2aec71de46e5693e78eba56c7bdad24c6e341 [2023-02-14 22:35:57,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 22:35:57,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 22:35:57,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 22:35:57,263 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 22:35:57,264 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 22:35:57,265 INFO L432 ainManager$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 22:35:58,333 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 22:35:58,650 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 22:35:58,650 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/floppy.i.cil-1.c [2023-02-14 22:35:58,680 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5e74b85/b0ff9efd4500467caeac82e397ebd7b3/FLAGa591f1b18 [2023-02-14 22:35:58,691 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d5e74b85/b0ff9efd4500467caeac82e397ebd7b3 [2023-02-14 22:35:58,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 22:35:58,695 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 22:35:58,697 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 22:35:58,697 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 22:35:58,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 22:35:58,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:35:58" (1/1) ... [2023-02-14 22:35:58,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424a56f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:58, skipping insertion in model container [2023-02-14 22:35:58,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 10:35:58" (1/1) ... [2023-02-14 22:35:58,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 22:35:58,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 22:35:59,195 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 22:35:59,219 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 22:35:59,225 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 22:35:59,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:35:59,542 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 22:35:59,592 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 22:35:59,603 WARN L623 FunctionHandler]: Unknown extern function swprintf [2023-02-14 22:35:59,604 WARN L623 FunctionHandler]: Unknown extern function sprintf [2023-02-14 22:35:59,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 22:35:59,806 INFO L208 MainTranslator]: Completed translation [2023-02-14 22:35:59,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59 WrapperNode [2023-02-14 22:35:59,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 22:35:59,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 22:35:59,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 22:35:59,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 22:35:59,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:35:59,872 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:35:59,977 INFO L138 Inliner]: procedures = 126, calls = 2882, calls flagged for inlining = 36, calls inlined = 25, statements flattened = 3051 [2023-02-14 22:35:59,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 22:35:59,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 22:35:59,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 22:35:59,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 22:35:59,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:35:59,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,109 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 22:36:00,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 22:36:00,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 22:36:00,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 22:36:00,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (1/1) ... [2023-02-14 22:36:00,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 22:36:00,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:36:00,161 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 22:36:00,202 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 22:36:00,222 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-14 22:36:00,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-14 22:36:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-14 22:36:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-14 22:36:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-14 22:36:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-14 22:36:00,223 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-14 22:36:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-14 22:36:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-14 22:36:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-14 22:36:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-14 22:36:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-14 22:36:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyCreateClose [2023-02-14 22:36:00,224 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyCreateClose [2023-02-14 22:36:00,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-14 22:36:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2023-02-14 22:36:00,225 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2023-02-14 22:36:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2023-02-14 22:36:00,225 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2023-02-14 22:36:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedExchange [2023-02-14 22:36:00,225 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedExchange [2023-02-14 22:36:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-14 22:36:00,225 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-14 22:36:00,225 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-14 22:36:00,226 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-14 22:36:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2023-02-14 22:36:00,226 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2023-02-14 22:36:00,226 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyDeviceControl [2023-02-14 22:36:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyDeviceControl [2023-02-14 22:36:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 22:36:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 22:36:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2023-02-14 22:36:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2023-02-14 22:36:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure ExfInterlockedInsertTailList [2023-02-14 22:36:00,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ExfInterlockedInsertTailList [2023-02-14 22:36:00,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 22:36:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 22:36:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-14 22:36:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-14 22:36:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 22:36:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2023-02-14 22:36:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2023-02-14 22:36:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 22:36:00,228 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2023-02-14 22:36:00,228 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2023-02-14 22:36:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 22:36:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyQueueRequest [2023-02-14 22:36:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyQueueRequest [2023-02-14 22:36:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-14 22:36:00,229 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-14 22:36:00,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-14 22:36:00,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 22:36:00,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 22:36:00,603 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 22:36:00,605 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 22:36:00,665 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:00,678 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-14 22:36:00,679 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-14 22:36:00,680 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:00,840 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-14 22:36:00,841 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-14 22:36:00,863 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:00,876 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2023-02-14 22:36:00,877 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2023-02-14 22:36:00,953 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:00,975 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2023-02-14 22:36:00,975 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2023-02-14 22:36:00,976 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:00,977 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:00,978 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,056 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2023-02-14 22:36:01,057 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume !false; [2023-02-14 22:36:01,057 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##23: assume false; [2023-02-14 22:36:01,057 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2023-02-14 22:36:01,058 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2023-02-14 22:36:01,058 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2023-02-14 22:36:01,060 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,065 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,066 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,411 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2023-02-14 22:36:01,411 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2023-02-14 22:36:01,411 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2023-02-14 22:36:01,411 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2023-02-14 22:36:01,412 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##124: assume !false; [2023-02-14 22:36:01,412 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume false; [2023-02-14 22:36:01,461 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,480 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-14 22:36:01,481 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-14 22:36:01,488 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,489 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,489 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,491 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,492 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,493 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,494 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:01,494 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-14 22:36:04,394 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !false; [2023-02-14 22:36:04,394 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume false; [2023-02-14 22:36:04,394 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##76: assume false; [2023-02-14 22:36:04,394 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2023-02-14 22:36:04,394 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##48: assume !false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##27: assume !false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##108: assume !false; [2023-02-14 22:36:04,395 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##107: assume false; [2023-02-14 22:36:04,406 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 22:36:04,413 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 22:36:04,413 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 22:36:04,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:36:04 BoogieIcfgContainer [2023-02-14 22:36:04,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 22:36:04,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 22:36:04,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 22:36:04,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 22:36:04,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 10:35:58" (1/3) ... [2023-02-14 22:36:04,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcc70d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:36:04, skipping insertion in model container [2023-02-14 22:36:04,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 10:35:59" (2/3) ... [2023-02-14 22:36:04,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcc70d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 10:36:04, skipping insertion in model container [2023-02-14 22:36:04,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 10:36:04" (3/3) ... [2023-02-14 22:36:04,420 INFO L112 eAbstractionObserver]: Analyzing ICFG floppy.i.cil-1.c [2023-02-14 22:36:04,430 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 22:36:04,430 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 22:36:04,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 22:36:04,469 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;@3182ad77, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 22:36:04,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 22:36:04,474 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 22:36:04,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-14 22:36:04,479 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:04,479 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 22:36:04,479 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:04,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:04,482 INFO L85 PathProgramCache]: Analyzing trace with hash -197079634, now seen corresponding path program 1 times [2023-02-14 22:36:04,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:04,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241884507] [2023-02-14 22:36:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:05,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:05,045 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 22:36:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241884507] [2023-02-14 22:36:05,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241884507] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:05,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:05,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:36:05,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335263037] [2023-02-14 22:36:05,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:36:05,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:05,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:36:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:36:05,098 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 22:36:08,686 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 22:36:08,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:08,846 INFO L93 Difference]: Finished difference Result 1130 states and 1773 transitions. [2023-02-14 22:36:08,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:36:08,849 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 22:36:08,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:08,865 INFO L225 Difference]: With dead ends: 1130 [2023-02-14 22:36:08,865 INFO L226 Difference]: Without dead ends: 639 [2023-02-14 22:36:08,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-14 22:36:08,878 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 412 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 207 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.6s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:08,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2006 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 856 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2023-02-14 22:36:08,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-14 22:36:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-14 22:36:08,965 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 22:36:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 818 transitions. [2023-02-14 22:36:08,974 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 818 transitions. Word has length 26 [2023-02-14 22:36:08,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:08,975 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 818 transitions. [2023-02-14 22:36:08,975 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 22:36:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 818 transitions. [2023-02-14 22:36:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 22:36:08,976 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:08,977 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 22:36:08,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 22:36:08,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:08,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:08,979 INFO L85 PathProgramCache]: Analyzing trace with hash -169212496, now seen corresponding path program 1 times [2023-02-14 22:36:08,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:08,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771974638] [2023-02-14 22:36:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:08,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:09,310 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 22:36:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771974638] [2023-02-14 22:36:09,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771974638] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:09,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:09,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 22:36:09,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129839902] [2023-02-14 22:36:09,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:09,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 22:36:09,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:09,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 22:36:09,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 22:36:09,314 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 22:36:13,390 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 22:36:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:13,523 INFO L93 Difference]: Finished difference Result 1183 states and 1738 transitions. [2023-02-14 22:36:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 22:36:13,523 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 22:36:13,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:13,526 INFO L225 Difference]: With dead ends: 1183 [2023-02-14 22:36:13,528 INFO L226 Difference]: Without dead ends: 639 [2023-02-14 22:36:13,529 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 22:36:13,530 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 374 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.1s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:13,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 2604 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1047 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-02-14 22:36:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2023-02-14 22:36:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 563. [2023-02-14 22:36:13,563 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 22:36:13,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 817 transitions. [2023-02-14 22:36:13,566 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 817 transitions. Word has length 29 [2023-02-14 22:36:13,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:13,566 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 817 transitions. [2023-02-14 22:36:13,566 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 22:36:13,566 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 817 transitions. [2023-02-14 22:36:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-14 22:36:13,567 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:13,567 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 22:36:13,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 22:36:13,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:13,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:13,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1081663514, now seen corresponding path program 1 times [2023-02-14 22:36:13,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:13,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506776585] [2023-02-14 22:36:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:13,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:13,863 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 22:36:13,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:13,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506776585] [2023-02-14 22:36:13,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506776585] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:13,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:13,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:36:13,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377229607] [2023-02-14 22:36:13,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:13,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:36:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:13,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:36:13,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:36:13,869 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 22:36:17,397 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 22:36:18,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:18,391 INFO L93 Difference]: Finished difference Result 1494 states and 2232 transitions. [2023-02-14 22:36:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:36:18,392 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 22:36:18,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:18,398 INFO L225 Difference]: With dead ends: 1494 [2023-02-14 22:36:18,400 INFO L226 Difference]: Without dead ends: 1093 [2023-02-14 22:36:18,402 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 22:36:18,403 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1344 mSDsluCounter, 1455 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 361 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.4s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:18,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1376 Valid, 2251 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 1114 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-02-14 22:36:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2023-02-14 22:36:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 979. [2023-02-14 22:36:18,451 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 22:36:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1446 transitions. [2023-02-14 22:36:18,456 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1446 transitions. Word has length 33 [2023-02-14 22:36:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:18,456 INFO L495 AbstractCegarLoop]: Abstraction has 979 states and 1446 transitions. [2023-02-14 22:36:18,457 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 22:36:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1446 transitions. [2023-02-14 22:36:18,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-14 22:36:18,464 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:18,464 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 22:36:18,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 22:36:18,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:18,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1331144769, now seen corresponding path program 1 times [2023-02-14 22:36:18,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:18,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677103961] [2023-02-14 22:36:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:18,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:18,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-14 22:36:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:18,884 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 22:36:18,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:18,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677103961] [2023-02-14 22:36:18,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677103961] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:18,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:18,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:36:18,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914022068] [2023-02-14 22:36:18,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:18,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:36:18,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:36:18,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:36:18,889 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 22:36:22,147 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 22:36:22,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:22,796 INFO L93 Difference]: Finished difference Result 1814 states and 2766 transitions. [2023-02-14 22:36:22,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:36:22,797 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 22:36:22,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:22,805 INFO L225 Difference]: With dead ends: 1814 [2023-02-14 22:36:22,805 INFO L226 Difference]: Without dead ends: 1796 [2023-02-14 22:36:22,805 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 22:36:22,807 INFO L413 NwaCegarLoop]: 669 mSDtfsCounter, 1471 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 344 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s 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, 3.8s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:22,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1899 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 889 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-02-14 22:36:22,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2023-02-14 22:36:22,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1569. [2023-02-14 22:36:22,863 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 22:36:22,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2364 transitions. [2023-02-14 22:36:22,870 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2364 transitions. Word has length 45 [2023-02-14 22:36:22,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:22,871 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2364 transitions. [2023-02-14 22:36:22,871 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 22:36:22,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2364 transitions. [2023-02-14 22:36:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 22:36:22,873 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:22,874 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 22:36:22,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 22:36:22,874 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1069708837, now seen corresponding path program 1 times [2023-02-14 22:36:22,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:22,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012573547] [2023-02-14 22:36:22,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:22,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:22,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:23,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:23,046 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 22:36:23,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:23,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012573547] [2023-02-14 22:36:23,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012573547] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:23,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:23,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:36:23,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838619682] [2023-02-14 22:36:23,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:23,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:36:23,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:23,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:36:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:36:23,048 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 22:36:26,277 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 22:36:26,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:26,563 INFO L93 Difference]: Finished difference Result 1793 states and 2748 transitions. [2023-02-14 22:36:26,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:36:26,563 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 22:36:26,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:26,569 INFO L225 Difference]: With dead ends: 1793 [2023-02-14 22:36:26,570 INFO L226 Difference]: Without dead ends: 1789 [2023-02-14 22:36:26,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-14 22:36:26,571 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 485 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 209 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s 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, 3.4s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:26,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 1895 Invalid, 1051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 841 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-02-14 22:36:26,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-02-14 22:36:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1602. [2023-02-14 22:36:26,611 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 22:36:26,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2411 transitions. [2023-02-14 22:36:26,617 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2411 transitions. Word has length 43 [2023-02-14 22:36:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:26,617 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 2411 transitions. [2023-02-14 22:36:26,617 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 22:36:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2411 transitions. [2023-02-14 22:36:26,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-14 22:36:26,618 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:26,618 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 22:36:26,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-14 22:36:26,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:26,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:26,619 INFO L85 PathProgramCache]: Analyzing trace with hash -897411344, now seen corresponding path program 1 times [2023-02-14 22:36:26,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:26,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630437738] [2023-02-14 22:36:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:26,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:26,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:26,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:26,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:26,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:26,761 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 22:36:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630437738] [2023-02-14 22:36:26,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630437738] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:26,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:26,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:36:26,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950892617] [2023-02-14 22:36:26,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:36:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:26,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:36:26,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:36:26,763 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 22:36:30,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 22:36:32,261 WARN L539 Checker$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 22:36:33,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:33,325 INFO L93 Difference]: Finished difference Result 3169 states and 4941 transitions. [2023-02-14 22:36:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:36:33,325 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 22:36:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:33,338 INFO L225 Difference]: With dead ends: 3169 [2023-02-14 22:36:33,338 INFO L226 Difference]: Without dead ends: 3166 [2023-02-14 22:36:33,339 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 22:36:33,340 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 22:36:33,340 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 22:36:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2023-02-14 22:36:33,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 2550. [2023-02-14 22:36:33,435 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 22:36:33,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2550 states to 2550 states and 3881 transitions. [2023-02-14 22:36:33,446 INFO L78 Accepts]: Start accepts. Automaton has 2550 states and 3881 transitions. Word has length 45 [2023-02-14 22:36:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:33,447 INFO L495 AbstractCegarLoop]: Abstraction has 2550 states and 3881 transitions. [2023-02-14 22:36:33,447 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 22:36:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2550 states and 3881 transitions. [2023-02-14 22:36:33,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-14 22:36:33,448 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:33,448 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 22:36:33,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-14 22:36:33,448 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:33,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:33,449 INFO L85 PathProgramCache]: Analyzing trace with hash -285485209, now seen corresponding path program 1 times [2023-02-14 22:36:33,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:33,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011122200] [2023-02-14 22:36:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:33,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-14 22:36:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:33,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:36:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:33,757 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 22:36:33,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:33,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011122200] [2023-02-14 22:36:33,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011122200] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:33,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:33,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-14 22:36:33,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3458782] [2023-02-14 22:36:33,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:33,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 22:36:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:33,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 22:36:33,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-14 22:36:33,760 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 22:36:37,915 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 22:36:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:39,736 INFO L93 Difference]: Finished difference Result 3798 states and 5980 transitions. [2023-02-14 22:36:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 22:36:39,737 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 22:36:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:39,776 INFO L225 Difference]: With dead ends: 3798 [2023-02-14 22:36:39,776 INFO L226 Difference]: Without dead ends: 3790 [2023-02-14 22:36:39,778 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 22:36:39,779 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 2755 mSDsluCounter, 2144 mSDsCounter, 0 mSdLazyCounter, 2227 mSolverCounterSat, 963 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 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, 5.5s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:39,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 2975 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [963 Valid, 2227 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2023-02-14 22:36:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3790 states. [2023-02-14 22:36:39,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3790 to 3139. [2023-02-14 22:36:39,891 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 22:36:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4829 transitions. [2023-02-14 22:36:39,900 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4829 transitions. Word has length 47 [2023-02-14 22:36:39,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:39,901 INFO L495 AbstractCegarLoop]: Abstraction has 3139 states and 4829 transitions. [2023-02-14 22:36:39,901 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 22:36:39,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4829 transitions. [2023-02-14 22:36:39,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-14 22:36:39,902 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:39,902 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 22:36:39,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 22:36:39,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:39,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:39,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1518670529, now seen corresponding path program 1 times [2023-02-14 22:36:39,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:39,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892477234] [2023-02-14 22:36:39,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:39,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:40,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:40,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:40,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:40,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-14 22:36:40,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:40,093 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 22:36:40,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:40,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892477234] [2023-02-14 22:36:40,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892477234] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:40,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:40,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 22:36:40,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023627730] [2023-02-14 22:36:40,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:40,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 22:36:40,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:40,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 22:36:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 22:36:40,096 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 22:36:43,853 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 22:36:46,379 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 22:36:46,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:46,892 INFO L93 Difference]: Finished difference Result 9987 states and 15921 transitions. [2023-02-14 22:36:46,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 22:36:46,905 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 22:36:46,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:46,928 INFO L225 Difference]: With dead ends: 9987 [2023-02-14 22:36:46,928 INFO L226 Difference]: Without dead ends: 7066 [2023-02-14 22:36:46,938 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 22:36:46,939 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 1339 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 297 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.5s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:46,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2251 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 960 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2023-02-14 22:36:46,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7066 states. [2023-02-14 22:36:47,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7066 to 6230. [2023-02-14 22:36:47,204 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 22:36:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 9775 transitions. [2023-02-14 22:36:47,222 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 9775 transitions. Word has length 46 [2023-02-14 22:36:47,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:47,223 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 9775 transitions. [2023-02-14 22:36:47,223 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 22:36:47,223 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 9775 transitions. [2023-02-14 22:36:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-14 22:36:47,225 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:47,225 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 22:36:47,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 22:36:47,225 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash 2006170664, now seen corresponding path program 1 times [2023-02-14 22:36:47,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:47,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658630160] [2023-02-14 22:36:47,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:47,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:47,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:47,608 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 22:36:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:47,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658630160] [2023-02-14 22:36:47,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658630160] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:47,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:47,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 22:36:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775895011] [2023-02-14 22:36:47,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:47,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 22:36:47,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 22:36:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 22:36:47,610 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 22:36:50,981 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 22:36:53,029 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 22:36:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:36:54,225 INFO L93 Difference]: Finished difference Result 13181 states and 20868 transitions. [2023-02-14 22:36:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 22:36:54,225 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 22:36:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:36:54,258 INFO L225 Difference]: With dead ends: 13181 [2023-02-14 22:36:54,259 INFO L226 Difference]: Without dead ends: 7261 [2023-02-14 22:36:54,275 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 22:36:54,277 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 2253 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 604 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-02-14 22:36:54,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 2158 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 1249 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2023-02-14 22:36:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2023-02-14 22:36:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 6221. [2023-02-14 22:36:54,576 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 22:36:54,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9754 transitions. [2023-02-14 22:36:54,595 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9754 transitions. Word has length 46 [2023-02-14 22:36:54,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:36:54,595 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9754 transitions. [2023-02-14 22:36:54,595 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 22:36:54,595 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9754 transitions. [2023-02-14 22:36:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-14 22:36:54,596 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:36:54,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:36:54,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-14 22:36:54,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:36:54,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:36:54,597 INFO L85 PathProgramCache]: Analyzing trace with hash -703618871, now seen corresponding path program 1 times [2023-02-14 22:36:54,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:36:54,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912767878] [2023-02-14 22:36:54,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:36:54,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:36:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:36:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:36:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:54,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-14 22:36:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:36:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:36:54,917 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 22:36:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:36:54,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912767878] [2023-02-14 22:36:54,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912767878] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:36:54,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:36:54,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-14 22:36:54,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822486046] [2023-02-14 22:36:54,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:36:54,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 22:36:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:36:54,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 22:36:54,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-14 22:36:54,920 INFO L87 Difference]: Start difference. First operand 6221 states and 9754 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 22:36:59,104 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 22:37:01,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:01,576 INFO L93 Difference]: Finished difference Result 7131 states and 11388 transitions. [2023-02-14 22:37:01,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-14 22:37:01,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2023-02-14 22:37:01,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:01,614 INFO L225 Difference]: With dead ends: 7131 [2023-02-14 22:37:01,616 INFO L226 Difference]: Without dead ends: 7126 [2023-02-14 22:37:01,620 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 22:37:01,621 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 2552 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2221 mSolverCounterSat, 826 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2613 SdHoareTripleChecker+Valid, 2921 SdHoareTripleChecker+Invalid, 3048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 2221 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-14 22:37:01,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2613 Valid, 2921 Invalid, 3048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 2221 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2023-02-14 22:37:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2023-02-14 22:37:01,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6221. [2023-02-14 22:37:01,897 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 22:37:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 9753 transitions. [2023-02-14 22:37:01,914 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 9753 transitions. Word has length 48 [2023-02-14 22:37:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:01,914 INFO L495 AbstractCegarLoop]: Abstraction has 6221 states and 9753 transitions. [2023-02-14 22:37:01,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 22:37:01,915 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 9753 transitions. [2023-02-14 22:37:01,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-14 22:37:01,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:01,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:37:01,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-14 22:37:01,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:01,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:01,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1527761131, now seen corresponding path program 1 times [2023-02-14 22:37:01,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:01,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823302990] [2023-02-14 22:37:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:01,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-02-14 22:37:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:02,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-14 22:37:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:02,347 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 22:37:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:02,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823302990] [2023-02-14 22:37:02,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823302990] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 22:37:02,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 22:37:02,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-14 22:37:02,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037501132] [2023-02-14 22:37:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 22:37:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 22:37:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:02,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 22:37:02,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-14 22:37:02,349 INFO L87 Difference]: Start difference. First operand 6221 states and 9753 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 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 22:37:06,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 22:37:08,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 22:37:09,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:09,553 INFO L93 Difference]: Finished difference Result 13280 states and 21298 transitions. [2023-02-14 22:37:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-14 22:37:09,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 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 50 [2023-02-14 22:37:09,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:09,572 INFO L225 Difference]: With dead ends: 13280 [2023-02-14 22:37:09,572 INFO L226 Difference]: Without dead ends: 7024 [2023-02-14 22:37:09,597 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 22:37:09,598 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 690 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1853 mSolverCounterSat, 228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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 22:37:09,598 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 22:37:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-14 22:37:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6248. [2023-02-14 22:37:09,911 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 22:37:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 9783 transitions. [2023-02-14 22:37:09,931 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 9783 transitions. Word has length 50 [2023-02-14 22:37:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:09,931 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 9783 transitions. [2023-02-14 22:37:09,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 4 states have internal predecessors, (41), 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 22:37:09,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 9783 transitions. [2023-02-14 22:37:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-14 22:37:09,934 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:09,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:37:09,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-14 22:37:09,934 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:09,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1052684790, now seen corresponding path program 1 times [2023-02-14 22:37:09,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:09,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152881318] [2023-02-14 22:37:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:10,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-14 22:37:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:10,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-14 22:37:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:10,504 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 22:37:10,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152881318] [2023-02-14 22:37:10,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152881318] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:10,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771469669] [2023-02-14 22:37:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:10,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:10,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:10,510 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 22:37:10,513 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 22:37:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:11,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 22:37:11,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:11,239 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 22:37:11,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:37:11,351 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 22:37:11,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771469669] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:37:11,352 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:37:11,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-02-14 22:37:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415173472] [2023-02-14 22:37:11,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:37:11,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-14 22:37:11,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:11,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-14 22:37:11,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-02-14 22:37:11,353 INFO L87 Difference]: Start difference. First operand 6248 states and 9783 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-14 22:37:16,020 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 22:37:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:17,026 INFO L93 Difference]: Finished difference Result 13331 states and 21354 transitions. [2023-02-14 22:37:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 22:37:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 50 [2023-02-14 22:37:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:17,048 INFO L225 Difference]: With dead ends: 13331 [2023-02-14 22:37:17,048 INFO L226 Difference]: Without dead ends: 7047 [2023-02-14 22:37:17,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2023-02-14 22:37:17,068 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 1088 mSDsluCounter, 3068 mSDsCounter, 0 mSdLazyCounter, 2172 mSolverCounterSat, 425 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 3631 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 2172 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-02-14 22:37:17,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1109 Valid, 3631 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 2172 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-02-14 22:37:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7047 states. [2023-02-14 22:37:17,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7047 to 6271. [2023-02-14 22:37:17,411 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 22:37:17,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 9806 transitions. [2023-02-14 22:37:17,429 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 9806 transitions. Word has length 50 [2023-02-14 22:37:17,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:17,429 INFO L495 AbstractCegarLoop]: Abstraction has 6271 states and 9806 transitions. [2023-02-14 22:37:17,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 10 states have internal predecessors, (60), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-14 22:37:17,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 9806 transitions. [2023-02-14 22:37:17,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-14 22:37:17,430 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:17,431 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 22:37:17,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 22:37:17,641 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 22:37:17,641 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:17,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:17,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1153105173, now seen corresponding path program 1 times [2023-02-14 22:37:17,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:17,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318729437] [2023-02-14 22:37:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:17,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:17,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 22:37:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:18,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-14 22:37:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:18,341 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 22:37:18,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318729437] [2023-02-14 22:37:18,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318729437] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109262218] [2023-02-14 22:37:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:18,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:18,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:18,343 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 22:37:18,369 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 22:37:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:19,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 22:37:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:19,237 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 22:37:19,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:37:19,538 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 22:37:19,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109262218] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:37:19,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:37:19,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2023-02-14 22:37:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187022028] [2023-02-14 22:37:19,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:37:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-14 22:37:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-14 22:37:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-02-14 22:37:19,539 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 22:37:25,188 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 22:37:26,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:26,256 INFO L93 Difference]: Finished difference Result 13497 states and 21603 transitions. [2023-02-14 22:37:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-14 22:37:26,257 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 22:37:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:26,275 INFO L225 Difference]: With dead ends: 13497 [2023-02-14 22:37:26,275 INFO L226 Difference]: Without dead ends: 7113 [2023-02-14 22:37:26,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 102 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=510, Invalid=1652, Unknown=0, NotChecked=0, Total=2162 [2023-02-14 22:37:26,294 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1119 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 441 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 3049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-02-14 22:37:26,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 4141 Invalid, 3049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 2607 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-02-14 22:37:26,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7113 states. [2023-02-14 22:37:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7113 to 6337. [2023-02-14 22:37:26,620 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 22:37:26,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 9872 transitions. [2023-02-14 22:37:26,638 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 9872 transitions. Word has length 54 [2023-02-14 22:37:26,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:26,638 INFO L495 AbstractCegarLoop]: Abstraction has 6337 states and 9872 transitions. [2023-02-14 22:37:26,638 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 22:37:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 9872 transitions. [2023-02-14 22:37:26,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-14 22:37:26,639 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:26,639 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 22:37:26,655 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 22:37:26,851 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 22:37:26,851 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1523908574, now seen corresponding path program 2 times [2023-02-14 22:37:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304027328] [2023-02-14 22:37:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:27,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-02-14 22:37:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:27,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-02-14 22:37:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:27,855 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 22:37:27,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:27,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304027328] [2023-02-14 22:37:27,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304027328] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:27,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378643710] [2023-02-14 22:37:27,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:37:27,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:27,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:27,870 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 22:37:27,872 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 22:37:30,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:37:30,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:37:30,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-14 22:37:30,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:30,845 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 22:37:30,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:37:31,433 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 22:37:31,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378643710] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:37:31,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:37:31,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 14] total 41 [2023-02-14 22:37:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548528682] [2023-02-14 22:37:31,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:37:31,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-14 22:37:31,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:37:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-14 22:37:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1275, Unknown=0, NotChecked=0, Total=1640 [2023-02-14 22:37:31,435 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 22:37:47,454 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 22:37:49,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 22:37:49,427 INFO L93 Difference]: Finished difference Result 13809 states and 22041 transitions. [2023-02-14 22:37:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-14 22:37:49,428 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 22:37:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 22:37:49,462 INFO L225 Difference]: With dead ends: 13809 [2023-02-14 22:37:49,467 INFO L226 Difference]: Without dead ends: 7245 [2023-02-14 22:37:49,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1092 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=1529, Invalid=5611, Unknown=0, NotChecked=0, Total=7140 [2023-02-14 22:37:49,489 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 992 mSDsluCounter, 9771 mSDsCounter, 0 mSdLazyCounter, 6862 mSolverCounterSat, 357 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 10334 SdHoareTripleChecker+Invalid, 7220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 357 IncrementalHoareTripleChecker+Valid, 6862 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-02-14 22:37:49,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 10334 Invalid, 7220 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [357 Valid, 6862 Invalid, 1 Unknown, 0 Unchecked, 9.3s Time] [2023-02-14 22:37:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7245 states. [2023-02-14 22:37:49,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7245 to 6469. [2023-02-14 22:37:49,802 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 22:37:49,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10004 transitions. [2023-02-14 22:37:49,821 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10004 transitions. Word has length 59 [2023-02-14 22:37:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 22:37:49,821 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10004 transitions. [2023-02-14 22:37:49,822 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 22:37:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10004 transitions. [2023-02-14 22:37:49,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-14 22:37:49,827 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 22:37:49,827 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 22:37:49,841 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 22:37:50,039 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 22:37:50,040 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 22:37:50,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 22:37:50,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1149216747, now seen corresponding path program 2 times [2023-02-14 22:37:50,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 22:37:50,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485557816] [2023-02-14 22:37:50,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 22:37:50,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 22:37:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 22:37:50,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-14 22:37:51,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-14 22:37:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-14 22:37:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 22:37:52,026 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 22:37:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 22:37:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485557816] [2023-02-14 22:37:52,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485557816] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 22:37:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594448069] [2023-02-14 22:37:52,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 22:37:52,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 22:37:52,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 22:37:52,028 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 22:37:52,030 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 22:37:57,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 22:37:57,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 22:37:57,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-14 22:37:57,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 22:37:58,071 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 22:37:58,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 22:38:01,732 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 22:38:01,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594448069] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 22:38:01,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 22:38:01,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26, 26] total 77 [2023-02-14 22:38:01,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727277709] [2023-02-14 22:38:01,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 22:38:01,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-14 22:38:01,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 22:38:01,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-14 22:38:01,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4549, Unknown=0, NotChecked=0, Total=5852 [2023-02-14 22:38:01,735 INFO L87 Difference]: Start difference. First operand 6469 states and 10004 transitions. Second operand has 77 states, 77 states have (on average 1.6103896103896105) internal successors, (124), 73 states have internal predecessors, (124), 2 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-14 22:38:26,628 WARN L233 SmtUtils]: Spent 20.27s 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 22:38:59,860 WARN L233 SmtUtils]: Spent 19.63s 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 22:39:24,411 WARN L233 SmtUtils]: Spent 19.25s 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) [2023-02-14 22:39:45,629 WARN L233 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 134 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 22:40:08,252 WARN L233 SmtUtils]: Spent 14.89s on a formula simplification. DAG size of input: 128 DAG size of output: 25 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)