./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ntdrivers/parport.i.cil-2.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 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:26:00,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:26:00,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:26:00,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:26:00,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:26:00,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:26:00,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:26:00,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:26:00,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:26:00,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:26:00,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:26:00,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:26:00,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:26:00,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:26:00,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:26:00,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:26:00,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:26:00,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:26:00,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:26:00,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:26:00,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:26:00,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:26:00,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:26:00,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:26:00,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:26:00,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:26:00,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:26:00,857 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:26:00,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:26:00,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:26:00,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:26:00,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:26:00,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:26:00,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:26:00,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:26:00,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:26:00,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:26:00,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:26:00,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:26:00,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:26:00,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:26:00,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:26:00,883 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:26:00,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:26:00,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:26:00,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:26:00,885 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:26:00,885 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:26:00,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:26:00,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:26:00,886 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:26:00,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:26:00,886 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:26:00,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:26:00,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:26:00,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:26:00,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:26:00,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:26:00,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:26:00,888 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:26:00,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:26:00,888 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:26:00,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:26:00,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:26:00,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:26:00,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:26:00,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:26:00,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:26:00,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:26:00,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:26:00,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:26:00,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:26:00,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:26:00,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:26:00,891 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:26:00,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:26:00,892 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:26:00,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2023-02-17 00:26:01,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:26:01,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:26:01,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:26:01,141 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:26:01,141 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:26:01,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2023-02-17 00:26:02,334 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:26:02,845 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:26:02,845 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2023-02-17 00:26:02,906 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4efc6075e/9889ca72b0d7477caee557e8cdc14c20/FLAG760bf4e99 [2023-02-17 00:26:03,406 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4efc6075e/9889ca72b0d7477caee557e8cdc14c20 [2023-02-17 00:26:03,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:26:03,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:26:03,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:26:03,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:26:03,416 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:26:03,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:26:03" (1/1) ... [2023-02-17 00:26:03,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527830e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:03, skipping insertion in model container [2023-02-17 00:26:03,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:26:03" (1/1) ... [2023-02-17 00:26:03,425 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:26:03,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:26:04,184 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/parport.i.cil-2.c[86591,86604] [2023-02-17 00:26:04,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:04,864 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:26:04,950 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/parport.i.cil-2.c[86591,86604] [2023-02-17 00:26:05,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:26:05,287 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:26:05,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05 WrapperNode [2023-02-17 00:26:05,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:26:05,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:26:05,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:26:05,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:26:05,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,552 INFO L138 Inliner]: procedures = 248, calls = 2342, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4671 [2023-02-17 00:26:05,552 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:26:05,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:26:05,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:26:05,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:26:05,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:26:05,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:26:05,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:26:05,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:26:05,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (1/1) ... [2023-02-17 00:26:05,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:26:05,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:05,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 00:26:05,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 00:26:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2023-02-17 00:26:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2023-02-17 00:26:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2023-02-17 00:26:05,962 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2023-02-17 00:26:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2023-02-17 00:26:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2023-02-17 00:26:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2023-02-17 00:26:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2023-02-17 00:26:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2023-02-17 00:26:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2023-02-17 00:26:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-17 00:26:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-17 00:26:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2023-02-17 00:26:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2023-02-17 00:26:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2023-02-17 00:26:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2023-02-17 00:26:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2023-02-17 00:26:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2023-02-17 00:26:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-17 00:26:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-17 00:26:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2023-02-17 00:26:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2023-02-17 00:26:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-17 00:26:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-17 00:26:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-17 00:26:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-17 00:26:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2023-02-17 00:26:05,966 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2023-02-17 00:26:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2023-02-17 00:26:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2023-02-17 00:26:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 00:26:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2023-02-17 00:26:05,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2023-02-17 00:26:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2023-02-17 00:26:05,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2023-02-17 00:26:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 00:26:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2023-02-17 00:26:05,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2023-02-17 00:26:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2023-02-17 00:26:05,969 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2023-02-17 00:26:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2023-02-17 00:26:05,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2023-02-17 00:26:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2023-02-17 00:26:05,970 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2023-02-17 00:26:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 00:26:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 00:26:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2023-02-17 00:26:05,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2023-02-17 00:26:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2023-02-17 00:26:05,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2023-02-17 00:26:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2023-02-17 00:26:05,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2023-02-17 00:26:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-17 00:26:05,972 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-17 00:26:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2023-02-17 00:26:05,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2023-02-17 00:26:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2023-02-17 00:26:05,972 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2023-02-17 00:26:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2023-02-17 00:26:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2023-02-17 00:26:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-17 00:26:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2023-02-17 00:26:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2023-02-17 00:26:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-17 00:26:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-17 00:26:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2023-02-17 00:26:05,974 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2023-02-17 00:26:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2023-02-17 00:26:05,974 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2023-02-17 00:26:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-17 00:26:05,974 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2023-02-17 00:26:05,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2023-02-17 00:26:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 00:26:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2023-02-17 00:26:05,975 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2023-02-17 00:26:05,975 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2023-02-17 00:26:05,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2023-02-17 00:26:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2023-02-17 00:26:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2023-02-17 00:26:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2023-02-17 00:26:05,976 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2023-02-17 00:26:05,976 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-17 00:26:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-17 00:26:05,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-17 00:26:05,977 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-17 00:26:05,978 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2023-02-17 00:26:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2023-02-17 00:26:05,978 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2023-02-17 00:26:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2023-02-17 00:26:05,978 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2023-02-17 00:26:05,978 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2023-02-17 00:26:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2023-02-17 00:26:05,979 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2023-02-17 00:26:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-17 00:26:05,979 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-17 00:26:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2023-02-17 00:26:05,979 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2023-02-17 00:26:05,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 00:26:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2023-02-17 00:26:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2023-02-17 00:26:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2023-02-17 00:26:05,980 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2023-02-17 00:26:05,980 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2023-02-17 00:26:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2023-02-17 00:26:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 00:26:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2023-02-17 00:26:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2023-02-17 00:26:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2023-02-17 00:26:05,981 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2023-02-17 00:26:05,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:26:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2023-02-17 00:26:05,982 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2023-02-17 00:26:05,982 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2023-02-17 00:26:05,983 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2023-02-17 00:26:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2023-02-17 00:26:05,985 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2023-02-17 00:26:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 00:26:05,985 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-17 00:26:05,986 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-17 00:26:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2023-02-17 00:26:05,987 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2023-02-17 00:26:05,987 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2023-02-17 00:26:05,988 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2023-02-17 00:26:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2023-02-17 00:26:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2023-02-17 00:26:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2023-02-17 00:26:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2023-02-17 00:26:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2023-02-17 00:26:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2023-02-17 00:26:05,992 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2023-02-17 00:26:05,992 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2023-02-17 00:26:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2023-02-17 00:26:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2023-02-17 00:26:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2023-02-17 00:26:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2023-02-17 00:26:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2023-02-17 00:26:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2023-02-17 00:26:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2023-02-17 00:26:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2023-02-17 00:26:05,993 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2023-02-17 00:26:05,993 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2023-02-17 00:26:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2023-02-17 00:26:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2023-02-17 00:26:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2023-02-17 00:26:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2023-02-17 00:26:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:26:05,994 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2023-02-17 00:26:05,994 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2023-02-17 00:26:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2023-02-17 00:26:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2023-02-17 00:26:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-17 00:26:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-17 00:26:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-17 00:26:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-17 00:26:05,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:26:05,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:26:06,727 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:26:06,732 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:26:06,803 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:06,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-02-17 00:26:06,843 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-02-17 00:26:06,847 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:06,907 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2023-02-17 00:26:06,907 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2023-02-17 00:26:07,238 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:07,295 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2023-02-17 00:26:07,295 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2023-02-17 00:26:07,627 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:07,632 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-17 00:26:07,632 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-17 00:26:07,733 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:07,750 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2023-02-17 00:26:07,750 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2023-02-17 00:26:07,847 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:07,855 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-17 00:26:07,855 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-17 00:26:07,857 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:07,878 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2023-02-17 00:26:07,878 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2023-02-17 00:26:07,879 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:07,922 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2023-02-17 00:26:07,923 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2023-02-17 00:26:08,190 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,191 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,192 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,193 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,193 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,195 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,201 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,202 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,205 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,207 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,207 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:08,212 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-17 00:26:14,681 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2023-02-17 00:26:14,682 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2023-02-17 00:26:14,682 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume false; [2023-02-17 00:26:14,682 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !false; [2023-02-17 00:26:14,682 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##477: assume !false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##476: assume false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##531: assume !false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##530: assume false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume !false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##520: assume false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2023-02-17 00:26:14,683 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2023-02-17 00:26:14,684 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2023-02-17 00:26:14,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-17 00:26:14,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-17 00:26:14,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##576: assume !false; [2023-02-17 00:26:14,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##575: assume false; [2023-02-17 00:26:14,685 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2023-02-17 00:26:14,764 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:26:14,778 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:26:14,779 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2023-02-17 00:26:14,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:26:14 BoogieIcfgContainer [2023-02-17 00:26:14,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:26:14,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:26:14,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:26:14,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:26:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:26:03" (1/3) ... [2023-02-17 00:26:14,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe31a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:26:14, skipping insertion in model container [2023-02-17 00:26:14,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:26:05" (2/3) ... [2023-02-17 00:26:14,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe31a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:26:14, skipping insertion in model container [2023-02-17 00:26:14,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:26:14" (3/3) ... [2023-02-17 00:26:14,793 INFO L112 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2023-02-17 00:26:14,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:26:14,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:26:14,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:26:14,900 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;@eb927be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:26:14,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:26:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 1728 states, 1203 states have (on average 1.4638403990024937) internal successors, (1761), 1252 states have internal predecessors, (1761), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) [2023-02-17 00:26:14,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 00:26:14,917 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:14,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:14,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1747724696, now seen corresponding path program 1 times [2023-02-17 00:26:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:14,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378784719] [2023-02-17 00:26:14,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:15,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:15,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:15,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378784719] [2023-02-17 00:26:15,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378784719] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:15,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:15,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:26:15,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267013779] [2023-02-17 00:26:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:15,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:26:15,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:26:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:26:15,410 INFO L87 Difference]: Start difference. First operand has 1728 states, 1203 states have (on average 1.4638403990024937) internal successors, (1761), 1252 states have internal predecessors, (1761), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:15,615 INFO L93 Difference]: Finished difference Result 3450 states and 5434 transitions. [2023-02-17 00:26:15,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:26:15,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 00:26:15,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:15,644 INFO L225 Difference]: With dead ends: 3450 [2023-02-17 00:26:15,645 INFO L226 Difference]: Without dead ends: 1721 [2023-02-17 00:26:15,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:26:15,662 INFO L413 NwaCegarLoop]: 2577 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:15,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:26:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2023-02-17 00:26:15,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1721. [2023-02-17 00:26:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1721 states, 1198 states have (on average 1.3998330550918197) internal successors, (1677), 1245 states have internal predecessors, (1677), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2023-02-17 00:26:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2564 transitions. [2023-02-17 00:26:15,840 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2564 transitions. Word has length 15 [2023-02-17 00:26:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:15,841 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2564 transitions. [2023-02-17 00:26:15,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:15,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2564 transitions. [2023-02-17 00:26:15,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-17 00:26:15,842 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:15,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:15,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:26:15,843 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:15,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:15,843 INFO L85 PathProgramCache]: Analyzing trace with hash 12693346, now seen corresponding path program 1 times [2023-02-17 00:26:15,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:15,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923347473] [2023-02-17 00:26:15,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:15,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:16,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:16,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:16,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923347473] [2023-02-17 00:26:16,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923347473] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:16,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:16,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:26:16,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171552487] [2023-02-17 00:26:16,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:16,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:26:16,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:16,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:26:16,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:16,114 INFO L87 Difference]: Start difference. First operand 1721 states and 2564 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:16,218 INFO L93 Difference]: Finished difference Result 3440 states and 5126 transitions. [2023-02-17 00:26:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:26:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-17 00:26:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:16,230 INFO L225 Difference]: With dead ends: 3440 [2023-02-17 00:26:16,230 INFO L226 Difference]: Without dead ends: 1723 [2023-02-17 00:26:16,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:16,239 INFO L413 NwaCegarLoop]: 2562 mSDtfsCounter, 1 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:16,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:26:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-02-17 00:26:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1722. [2023-02-17 00:26:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1199 states have (on average 1.3994995829858214) internal successors, (1678), 1246 states have internal predecessors, (1678), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2023-02-17 00:26:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2565 transitions. [2023-02-17 00:26:16,316 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2565 transitions. Word has length 15 [2023-02-17 00:26:16,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:16,317 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2565 transitions. [2023-02-17 00:26:16,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:16,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2565 transitions. [2023-02-17 00:26:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:26:16,318 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:16,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:26:16,318 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash 25759584, now seen corresponding path program 1 times [2023-02-17 00:26:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:16,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260778707] [2023-02-17 00:26:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:16,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260778707] [2023-02-17 00:26:16,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260778707] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:26:16,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76544734] [2023-02-17 00:26:16,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:16,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:16,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:26:16,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:26:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:17,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 00:26:17,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 00:26:17,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:26:17,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76544734] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:17,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 00:26:17,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-17 00:26:17,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774716995] [2023-02-17 00:26:17,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:17,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:26:17,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:17,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:26:17,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:17,288 INFO L87 Difference]: Start difference. First operand 1722 states and 2565 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:17,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:17,389 INFO L93 Difference]: Finished difference Result 1792 states and 2653 transitions. [2023-02-17 00:26:17,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:26:17,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-17 00:26:17,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:17,405 INFO L225 Difference]: With dead ends: 1792 [2023-02-17 00:26:17,405 INFO L226 Difference]: Without dead ends: 1773 [2023-02-17 00:26:17,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:17,407 INFO L413 NwaCegarLoop]: 2562 mSDtfsCounter, 2542 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2626 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:17,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 2626 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:26:17,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2023-02-17 00:26:17,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1764. [2023-02-17 00:26:17,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1233 states have (on average 1.3965936739659368) internal successors, (1722), 1282 states have internal predecessors, (1722), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2023-02-17 00:26:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2617 transitions. [2023-02-17 00:26:17,485 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2617 transitions. Word has length 17 [2023-02-17 00:26:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:17,486 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2617 transitions. [2023-02-17 00:26:17,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2617 transitions. [2023-02-17 00:26:17,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 00:26:17,487 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:17,487 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:17,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-17 00:26:17,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:17,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:17,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:17,697 INFO L85 PathProgramCache]: Analyzing trace with hash 11414675, now seen corresponding path program 1 times [2023-02-17 00:26:17,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:17,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820312296] [2023-02-17 00:26:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:17,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:17,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:17,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820312296] [2023-02-17 00:26:17,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820312296] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:26:17,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467395714] [2023-02-17 00:26:17,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:17,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:17,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:17,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:26:17,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:26:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:18,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 00:26:18,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 00:26:18,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:26:18,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467395714] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:18,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 00:26:18,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-17 00:26:18,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966225417] [2023-02-17 00:26:18,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:18,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:26:18,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:26:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:18,567 INFO L87 Difference]: Start difference. First operand 1764 states and 2617 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:18,723 INFO L93 Difference]: Finished difference Result 1780 states and 2636 transitions. [2023-02-17 00:26:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:26:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-17 00:26:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:18,735 INFO L225 Difference]: With dead ends: 1780 [2023-02-17 00:26:18,736 INFO L226 Difference]: Without dead ends: 1764 [2023-02-17 00:26:18,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:18,740 INFO L413 NwaCegarLoop]: 2564 mSDtfsCounter, 0 mSDsluCounter, 2507 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5071 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:18,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5071 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:26:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-02-17 00:26:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1764. [2023-02-17 00:26:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1764 states, 1233 states have (on average 1.3957826439578265) internal successors, (1721), 1282 states have internal predecessors, (1721), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2023-02-17 00:26:18,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2616 transitions. [2023-02-17 00:26:18,813 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2616 transitions. Word has length 17 [2023-02-17 00:26:18,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:18,813 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2616 transitions. [2023-02-17 00:26:18,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2616 transitions. [2023-02-17 00:26:18,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 00:26:18,817 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:18,817 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] [2023-02-17 00:26:18,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 00:26:19,027 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,SelfDestructingSolverStorable3 [2023-02-17 00:26:19,027 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash -478438479, now seen corresponding path program 1 times [2023-02-17 00:26:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:19,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319596234] [2023-02-17 00:26:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:19,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:19,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:19,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319596234] [2023-02-17 00:26:19,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319596234] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:26:19,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057401366] [2023-02-17 00:26:19,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:19,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:19,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:26:19,249 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 00:26:19,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 00:26:19,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:19,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 00:26:19,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:26:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:19,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:26:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:26:19,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057401366] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:26:19,937 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:26:19,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-17 00:26:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844176863] [2023-02-17 00:26:19,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:26:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 00:26:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 00:26:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:26:19,939 INFO L87 Difference]: Start difference. First operand 1764 states and 2616 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:20,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:20,099 INFO L93 Difference]: Finished difference Result 3529 states and 5235 transitions. [2023-02-17 00:26:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:26:20,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-17 00:26:20,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:20,111 INFO L225 Difference]: With dead ends: 3529 [2023-02-17 00:26:20,112 INFO L226 Difference]: Without dead ends: 1770 [2023-02-17 00:26:20,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:26:20,119 INFO L413 NwaCegarLoop]: 2561 mSDtfsCounter, 2 mSDsluCounter, 7677 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10238 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:20,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10238 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:26:20,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2023-02-17 00:26:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1770. [2023-02-17 00:26:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1770 states, 1239 states have (on average 1.393866020984665) internal successors, (1727), 1288 states have internal predecessors, (1727), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2023-02-17 00:26:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2622 transitions. [2023-02-17 00:26:20,181 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2622 transitions. Word has length 22 [2023-02-17 00:26:20,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:20,181 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2622 transitions. [2023-02-17 00:26:20,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:20,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2622 transitions. [2023-02-17 00:26:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-17 00:26:20,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:20,185 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:26:20,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 00:26:20,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:26:20,398 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:20,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:20,398 INFO L85 PathProgramCache]: Analyzing trace with hash 307295479, now seen corresponding path program 2 times [2023-02-17 00:26:20,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:20,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421793007] [2023-02-17 00:26:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:20,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:20,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:20,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:20,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421793007] [2023-02-17 00:26:20,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421793007] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:20,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:20,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:26:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242453166] [2023-02-17 00:26:20,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:20,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:26:20,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:20,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:26:20,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:20,710 INFO L87 Difference]: Start difference. First operand 1770 states and 2622 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:21,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:21,056 INFO L93 Difference]: Finished difference Result 4499 states and 6726 transitions. [2023-02-17 00:26:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:26:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-17 00:26:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:21,076 INFO L225 Difference]: With dead ends: 4499 [2023-02-17 00:26:21,076 INFO L226 Difference]: Without dead ends: 3330 [2023-02-17 00:26:21,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:21,082 INFO L413 NwaCegarLoop]: 4506 mSDtfsCounter, 2447 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2447 SdHoareTripleChecker+Valid, 6810 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:21,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2447 Valid, 6810 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 00:26:21,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2023-02-17 00:26:21,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3299. [2023-02-17 00:26:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2308 states have (on average 1.389948006932409) internal successors, (3208), 2376 states have internal predecessors, (3208), 851 states have call successors, (851), 142 states have call predecessors, (851), 139 states have return successors, (869), 818 states have call predecessors, (869), 835 states have call successors, (869) [2023-02-17 00:26:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4928 transitions. [2023-02-17 00:26:21,229 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4928 transitions. Word has length 28 [2023-02-17 00:26:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:21,229 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 4928 transitions. [2023-02-17 00:26:21,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4928 transitions. [2023-02-17 00:26:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-17 00:26:21,231 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:21,232 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:21,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-17 00:26:21,232 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1796297636, now seen corresponding path program 1 times [2023-02-17 00:26:21,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:21,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387639957] [2023-02-17 00:26:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:21,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 00:26:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:21,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:21,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387639957] [2023-02-17 00:26:21,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387639957] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:21,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:21,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:26:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196751337] [2023-02-17 00:26:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:21,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 00:26:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 00:26:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 00:26:21,423 INFO L87 Difference]: Start difference. First operand 3299 states and 4928 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:26,374 INFO L93 Difference]: Finished difference Result 4067 states and 6046 transitions. [2023-02-17 00:26:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:26:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2023-02-17 00:26:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:26,400 INFO L225 Difference]: With dead ends: 4067 [2023-02-17 00:26:26,400 INFO L226 Difference]: Without dead ends: 4062 [2023-02-17 00:26:26,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:26,404 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 2540 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 3436 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2864 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 4588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 3436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:26,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2864 Valid, 3264 Invalid, 4588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 3436 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-02-17 00:26:26,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2023-02-17 00:26:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4033. [2023-02-17 00:26:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.3794853207683944) internal successors, (3806), 2837 states have internal predecessors, (3806), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2023-02-17 00:26:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 6001 transitions. [2023-02-17 00:26:26,591 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 6001 transitions. Word has length 40 [2023-02-17 00:26:26,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:26,591 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 6001 transitions. [2023-02-17 00:26:26,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:26,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 6001 transitions. [2023-02-17 00:26:26,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 00:26:26,593 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:26,593 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:26,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-17 00:26:26,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:26,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:26,594 INFO L85 PathProgramCache]: Analyzing trace with hash 601875904, now seen corresponding path program 1 times [2023-02-17 00:26:26,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:26,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338716539] [2023-02-17 00:26:26,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:26,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:26,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 00:26:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:26,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:26,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:26,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338716539] [2023-02-17 00:26:26,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338716539] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:26,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:26,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:26:26,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104533836] [2023-02-17 00:26:26,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:26,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:26:26,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:26,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:26:26,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:26:26,931 INFO L87 Difference]: Start difference. First operand 4033 states and 6001 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:33,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:33,538 INFO L93 Difference]: Finished difference Result 4080 states and 6058 transitions. [2023-02-17 00:26:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:26:33,539 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-02-17 00:26:33,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:33,563 INFO L225 Difference]: With dead ends: 4080 [2023-02-17 00:26:33,564 INFO L226 Difference]: Without dead ends: 4071 [2023-02-17 00:26:33,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:26:33,568 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 5848 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 3669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5980 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 8875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3669 IncrementalHoareTripleChecker+Valid, 5206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:33,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5980 Valid, 3937 Invalid, 8875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3669 Valid, 5206 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-02-17 00:26:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2023-02-17 00:26:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4033. [2023-02-17 00:26:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.3787604204421893) internal successors, (3804), 2837 states have internal predecessors, (3804), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2023-02-17 00:26:33,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5999 transitions. [2023-02-17 00:26:33,807 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5999 transitions. Word has length 41 [2023-02-17 00:26:33,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:33,808 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 5999 transitions. [2023-02-17 00:26:33,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5999 transitions. [2023-02-17 00:26:33,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-17 00:26:33,811 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:33,811 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:33,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-17 00:26:33,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:33,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:33,812 INFO L85 PathProgramCache]: Analyzing trace with hash 588958024, now seen corresponding path program 1 times [2023-02-17 00:26:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:33,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250613685] [2023-02-17 00:26:33,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:33,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:34,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 00:26:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:34,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:34,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250613685] [2023-02-17 00:26:34,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250613685] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:34,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:34,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:26:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101640062] [2023-02-17 00:26:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:34,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:26:34,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:26:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:26:34,095 INFO L87 Difference]: Start difference. First operand 4033 states and 5999 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:39,966 INFO L93 Difference]: Finished difference Result 4073 states and 6047 transitions. [2023-02-17 00:26:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:26:39,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2023-02-17 00:26:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:39,997 INFO L225 Difference]: With dead ends: 4073 [2023-02-17 00:26:39,997 INFO L226 Difference]: Without dead ends: 4064 [2023-02-17 00:26:40,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:26:40,002 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 5779 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 5274 mSolverCounterSat, 3579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5911 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 8853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3579 IncrementalHoareTripleChecker+Valid, 5274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:40,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5911 Valid, 3932 Invalid, 8853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3579 Valid, 5274 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-02-17 00:26:40,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2023-02-17 00:26:40,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 4033. [2023-02-17 00:26:40,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4033 states, 2759 states have (on average 1.378035520115984) internal successors, (3802), 2837 states have internal predecessors, (3802), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2023-02-17 00:26:40,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5997 transitions. [2023-02-17 00:26:40,285 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5997 transitions. Word has length 42 [2023-02-17 00:26:40,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:40,285 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 5997 transitions. [2023-02-17 00:26:40,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:40,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5997 transitions. [2023-02-17 00:26:40,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 00:26:40,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:40,287 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:40,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-17 00:26:40,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:40,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1278856833, now seen corresponding path program 1 times [2023-02-17 00:26:40,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:40,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390376283] [2023-02-17 00:26:40,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:40,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:40,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:40,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390376283] [2023-02-17 00:26:40,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390376283] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:40,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:40,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:26:40,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515294226] [2023-02-17 00:26:40,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:40,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:26:40,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:26:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:40,580 INFO L87 Difference]: Start difference. First operand 4033 states and 5997 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:40,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:40,804 INFO L93 Difference]: Finished difference Result 6594 states and 9782 transitions. [2023-02-17 00:26:40,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:26:40,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-02-17 00:26:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:40,836 INFO L225 Difference]: With dead ends: 6594 [2023-02-17 00:26:40,837 INFO L226 Difference]: Without dead ends: 6291 [2023-02-17 00:26:40,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:40,846 INFO L413 NwaCegarLoop]: 3558 mSDtfsCounter, 2445 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2445 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:40,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 5382 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:26:40,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2023-02-17 00:26:41,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6210. [2023-02-17 00:26:41,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6210 states, 4199 states have (on average 1.3786615860919267) internal successors, (5789), 4317 states have internal predecessors, (5789), 1726 states have call successors, (1726), 283 states have call predecessors, (1726), 284 states have return successors, (1757), 1678 states have call predecessors, (1757), 1713 states have call successors, (1757) [2023-02-17 00:26:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9272 transitions. [2023-02-17 00:26:41,283 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9272 transitions. Word has length 43 [2023-02-17 00:26:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:41,283 INFO L495 AbstractCegarLoop]: Abstraction has 6210 states and 9272 transitions. [2023-02-17 00:26:41,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9272 transitions. [2023-02-17 00:26:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 00:26:41,286 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:41,286 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:41,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 00:26:41,287 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:41,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1132671081, now seen corresponding path program 1 times [2023-02-17 00:26:41,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:41,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099604537] [2023-02-17 00:26:41,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:41,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:41,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:41,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-17 00:26:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:41,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:41,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099604537] [2023-02-17 00:26:41,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099604537] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:41,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:41,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 00:26:41,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261296612] [2023-02-17 00:26:41,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:41,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 00:26:41,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:41,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 00:26:41,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 00:26:41,553 INFO L87 Difference]: Start difference. First operand 6210 states and 9272 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:45,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:45,255 INFO L93 Difference]: Finished difference Result 6238 states and 9306 transitions. [2023-02-17 00:26:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 00:26:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2023-02-17 00:26:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:45,289 INFO L225 Difference]: With dead ends: 6238 [2023-02-17 00:26:45,290 INFO L226 Difference]: Without dead ends: 6192 [2023-02-17 00:26:45,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:26:45,298 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 1095 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 4442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:45,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 4468 Invalid, 4442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4257 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-02-17 00:26:45,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2023-02-17 00:26:45,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 6191. [2023-02-17 00:26:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4186 states have (on average 1.3786430960344003) internal successors, (5771), 4304 states have internal predecessors, (5771), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2023-02-17 00:26:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9242 transitions. [2023-02-17 00:26:45,709 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9242 transitions. Word has length 43 [2023-02-17 00:26:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:45,709 INFO L495 AbstractCegarLoop]: Abstraction has 6191 states and 9242 transitions. [2023-02-17 00:26:45,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:26:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9242 transitions. [2023-02-17 00:26:45,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-17 00:26:45,711 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:45,711 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:45,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 00:26:45,711 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash -323587381, now seen corresponding path program 1 times [2023-02-17 00:26:45,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:45,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558888274] [2023-02-17 00:26:45,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:45,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:45,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558888274] [2023-02-17 00:26:45,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558888274] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:45,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:45,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:26:45,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388972818] [2023-02-17 00:26:45,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:45,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:26:45,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:26:45,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:45,945 INFO L87 Difference]: Start difference. First operand 6191 states and 9242 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:46,320 INFO L93 Difference]: Finished difference Result 6194 states and 9244 transitions. [2023-02-17 00:26:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:26:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2023-02-17 00:26:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:46,348 INFO L225 Difference]: With dead ends: 6194 [2023-02-17 00:26:46,349 INFO L226 Difference]: Without dead ends: 6191 [2023-02-17 00:26:46,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:26:46,355 INFO L413 NwaCegarLoop]: 2516 mSDtfsCounter, 12 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4974 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:46,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4974 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 00:26:46,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2023-02-17 00:26:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6191. [2023-02-17 00:26:46,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6191 states, 4186 states have (on average 1.378404204491161) internal successors, (5770), 4304 states have internal predecessors, (5770), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2023-02-17 00:26:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9241 transitions. [2023-02-17 00:26:46,766 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9241 transitions. Word has length 43 [2023-02-17 00:26:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:46,767 INFO L495 AbstractCegarLoop]: Abstraction has 6191 states and 9241 transitions. [2023-02-17 00:26:46,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:26:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9241 transitions. [2023-02-17 00:26:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 00:26:46,770 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:46,770 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-17 00:26:46,770 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:46,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2052618280, now seen corresponding path program 1 times [2023-02-17 00:26:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:46,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760664053] [2023-02-17 00:26:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:46,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:47,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-17 00:26:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:26:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:47,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:47,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760664053] [2023-02-17 00:26:47,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760664053] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:47,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:47,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 00:26:47,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766238099] [2023-02-17 00:26:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:47,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:26:47,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:47,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:26:47,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:26:47,131 INFO L87 Difference]: Start difference. First operand 6191 states and 9241 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:26:50,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:26:54,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:26:58,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:26:58,917 INFO L93 Difference]: Finished difference Result 12680 states and 19034 transitions. [2023-02-17 00:26:58,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:26:58,918 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-02-17 00:26:58,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:26:58,981 INFO L225 Difference]: With dead ends: 12680 [2023-02-17 00:26:58,981 INFO L226 Difference]: Without dead ends: 7064 [2023-02-17 00:26:59,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-17 00:26:59,001 INFO L413 NwaCegarLoop]: 1542 mSDtfsCounter, 760 mSDsluCounter, 8761 mSDsCounter, 0 mSdLazyCounter, 9608 mSolverCounterSat, 363 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 10303 SdHoareTripleChecker+Invalid, 9972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 9608 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:26:59,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [984 Valid, 10303 Invalid, 9972 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [363 Valid, 9608 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2023-02-17 00:26:59,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2023-02-17 00:26:59,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 6200. [2023-02-17 00:26:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6200 states, 4193 states have (on average 1.377772477939423) internal successors, (5777), 4311 states have internal predecessors, (5777), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 286 states have return successors, (1756), 1674 states have call predecessors, (1756), 1707 states have call successors, (1756) [2023-02-17 00:26:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 9253 transitions. [2023-02-17 00:26:59,420 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 9253 transitions. Word has length 46 [2023-02-17 00:26:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:26:59,420 INFO L495 AbstractCegarLoop]: Abstraction has 6200 states and 9253 transitions. [2023-02-17 00:26:59,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:26:59,421 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 9253 transitions. [2023-02-17 00:26:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 00:26:59,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:26:59,423 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:26:59,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-17 00:26:59,423 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:26:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:26:59,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1841267367, now seen corresponding path program 1 times [2023-02-17 00:26:59,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:26:59,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682303046] [2023-02-17 00:26:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:26:59,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:26:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:59,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-17 00:26:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:59,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:26:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:26:59,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:26:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:26:59,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682303046] [2023-02-17 00:26:59,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682303046] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:26:59,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:26:59,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 00:26:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73545883] [2023-02-17 00:26:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:26:59,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 00:26:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:26:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 00:26:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:26:59,849 INFO L87 Difference]: Start difference. First operand 6200 states and 9253 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:27:03,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:06,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:27:10,575 INFO L93 Difference]: Finished difference Result 7096 states and 10689 transitions. [2023-02-17 00:27:10,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 00:27:10,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-02-17 00:27:10,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:27:10,605 INFO L225 Difference]: With dead ends: 7096 [2023-02-17 00:27:10,605 INFO L226 Difference]: Without dead ends: 7057 [2023-02-17 00:27:10,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-17 00:27:10,611 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 755 mSDsluCounter, 5949 mSDsCounter, 0 mSdLazyCounter, 7050 mSolverCounterSat, 366 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 7469 SdHoareTripleChecker+Invalid, 7417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 7050 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:27:10,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 7469 Invalid, 7417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 7050 Invalid, 1 Unknown, 0 Unchecked, 10.3s Time] [2023-02-17 00:27:10,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2023-02-17 00:27:11,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 6194. [2023-02-17 00:27:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6194 states, 4188 states have (on average 1.377984718242598) internal successors, (5771), 4306 states have internal predecessors, (5771), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2023-02-17 00:27:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 9244 transitions. [2023-02-17 00:27:11,042 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 9244 transitions. Word has length 46 [2023-02-17 00:27:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:27:11,042 INFO L495 AbstractCegarLoop]: Abstraction has 6194 states and 9244 transitions. [2023-02-17 00:27:11,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:27:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 9244 transitions. [2023-02-17 00:27:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-17 00:27:11,045 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:27:11,045 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:27:11,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 00:27:11,046 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:27:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:27:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103344, now seen corresponding path program 1 times [2023-02-17 00:27:11,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:27:11,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799304729] [2023-02-17 00:27:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:27:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:27:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:11,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-17 00:27:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:27:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:11,480 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:27:11,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:27:11,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799304729] [2023-02-17 00:27:11,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799304729] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:27:11,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:27:11,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 00:27:11,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759550960] [2023-02-17 00:27:11,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:27:11,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:27:11,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:27:11,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:27:11,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:27:11,483 INFO L87 Difference]: Start difference. First operand 6194 states and 9244 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 00:27:15,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:20,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:27:25,631 INFO L93 Difference]: Finished difference Result 7054 states and 10635 transitions. [2023-02-17 00:27:25,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 00:27:25,631 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2023-02-17 00:27:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:27:25,663 INFO L225 Difference]: With dead ends: 7054 [2023-02-17 00:27:25,663 INFO L226 Difference]: Without dead ends: 7024 [2023-02-17 00:27:25,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:27:25,669 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 1133 mSDsluCounter, 6899 mSDsCounter, 0 mSdLazyCounter, 10085 mSolverCounterSat, 391 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 8112 SdHoareTripleChecker+Invalid, 10478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 10085 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:27:25,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 8112 Invalid, 10478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [391 Valid, 10085 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2023-02-17 00:27:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-17 00:27:26,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6192. [2023-02-17 00:27:26,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 4187 states have (on average 1.3778361595414377) internal successors, (5769), 4305 states have internal predecessors, (5769), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2023-02-17 00:27:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9240 transitions. [2023-02-17 00:27:26,180 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9240 transitions. Word has length 47 [2023-02-17 00:27:26,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:27:26,180 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 9240 transitions. [2023-02-17 00:27:26,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 00:27:26,181 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9240 transitions. [2023-02-17 00:27:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 00:27:26,182 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:27:26,182 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:27:26,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-17 00:27:26,183 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:27:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:27:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1404767676, now seen corresponding path program 1 times [2023-02-17 00:27:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:27:26,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857001466] [2023-02-17 00:27:26,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:27:26,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:27:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-17 00:27:26,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:26,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:27:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:27:26,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:27:26,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857001466] [2023-02-17 00:27:26,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857001466] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:27:26,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:27:26,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 00:27:26,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484346600] [2023-02-17 00:27:26,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:27:26,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:27:26,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:27:26,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:27:26,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:27:26,613 INFO L87 Difference]: Start difference. First operand 6192 states and 9240 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:27:28,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:30,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:27:41,218 INFO L93 Difference]: Finished difference Result 8304 states and 12651 transitions. [2023-02-17 00:27:41,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:27:41,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-02-17 00:27:41,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:27:41,248 INFO L225 Difference]: With dead ends: 8304 [2023-02-17 00:27:41,248 INFO L226 Difference]: Without dead ends: 8264 [2023-02-17 00:27:41,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-02-17 00:27:41,256 INFO L413 NwaCegarLoop]: 1996 mSDtfsCounter, 1154 mSDsluCounter, 11065 mSDsCounter, 0 mSdLazyCounter, 10022 mSolverCounterSat, 379 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 13061 SdHoareTripleChecker+Invalid, 10402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 10022 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:27:41,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 13061 Invalid, 10402 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 10022 Invalid, 1 Unknown, 0 Unchecked, 14.1s Time] [2023-02-17 00:27:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8264 states. [2023-02-17 00:27:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8264 to 6197. [2023-02-17 00:27:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6197 states, 4191 states have (on average 1.3774755428298735) internal successors, (5773), 4309 states have internal predecessors, (5773), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 286 states have return successors, (1755), 1673 states have call predecessors, (1755), 1706 states have call successors, (1755) [2023-02-17 00:27:41,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 9247 transitions. [2023-02-17 00:27:41,769 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 9247 transitions. Word has length 50 [2023-02-17 00:27:41,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:27:41,769 INFO L495 AbstractCegarLoop]: Abstraction has 6197 states and 9247 transitions. [2023-02-17 00:27:41,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:27:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 9247 transitions. [2023-02-17 00:27:41,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 00:27:41,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:27:41,771 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:27:41,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-17 00:27:41,771 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:27:41,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:27:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash 852143331, now seen corresponding path program 1 times [2023-02-17 00:27:41,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:27:41,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329623817] [2023-02-17 00:27:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:27:41,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:27:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:42,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-17 00:27:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:27:42,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:42,065 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:27:42,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:27:42,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329623817] [2023-02-17 00:27:42,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329623817] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:27:42,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:27:42,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 00:27:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770380534] [2023-02-17 00:27:42,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:27:42,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 00:27:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:27:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 00:27:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:27:42,068 INFO L87 Difference]: Start difference. First operand 6197 states and 9247 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:27:44,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:46,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:49,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:27:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:27:53,168 INFO L93 Difference]: Finished difference Result 7069 states and 10652 transitions. [2023-02-17 00:27:53,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 00:27:53,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-02-17 00:27:53,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:27:53,192 INFO L225 Difference]: With dead ends: 7069 [2023-02-17 00:27:53,192 INFO L226 Difference]: Without dead ends: 7029 [2023-02-17 00:27:53,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:27:53,196 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 1149 mSDsluCounter, 5446 mSDsCounter, 0 mSdLazyCounter, 6986 mSolverCounterSat, 359 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 6951 SdHoareTripleChecker+Invalid, 7346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 6986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:27:53,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 6951 Invalid, 7346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 6986 Invalid, 1 Unknown, 0 Unchecked, 10.7s Time] [2023-02-17 00:27:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7029 states. [2023-02-17 00:27:53,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7029 to 6192. [2023-02-17 00:27:53,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6192 states, 4187 states have (on average 1.3775973250537377) internal successors, (5768), 4305 states have internal predecessors, (5768), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2023-02-17 00:27:53,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9239 transitions. [2023-02-17 00:27:53,641 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9239 transitions. Word has length 50 [2023-02-17 00:27:53,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:27:53,641 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 9239 transitions. [2023-02-17 00:27:53,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:27:53,641 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9239 transitions. [2023-02-17 00:27:53,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 00:27:53,643 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:27:53,643 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:27:53,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-17 00:27:53,643 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:27:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:27:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 900358753, now seen corresponding path program 1 times [2023-02-17 00:27:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:27:53,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524851958] [2023-02-17 00:27:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:27:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:27:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:27:53,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:27:53,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524851958] [2023-02-17 00:27:53,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524851958] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:27:53,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:27:53,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:27:53,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764224086] [2023-02-17 00:27:53,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:27:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:27:53,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:27:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:27:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:27:53,959 INFO L87 Difference]: Start difference. First operand 6192 states and 9239 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:27:54,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:27:54,361 INFO L93 Difference]: Finished difference Result 6284 states and 9363 transitions. [2023-02-17 00:27:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:27:54,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-02-17 00:27:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:27:54,383 INFO L225 Difference]: With dead ends: 6284 [2023-02-17 00:27:54,384 INFO L226 Difference]: Without dead ends: 6253 [2023-02-17 00:27:54,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:27:54,388 INFO L413 NwaCegarLoop]: 2530 mSDtfsCounter, 160 mSDsluCounter, 10159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 12689 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:27:54,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 12689 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:27:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2023-02-17 00:27:54,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6195. [2023-02-17 00:27:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6195 states, 4190 states have (on average 1.377326968973747) internal successors, (5771), 4308 states have internal predecessors, (5771), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2023-02-17 00:27:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6195 states to 6195 states and 9242 transitions. [2023-02-17 00:27:54,802 INFO L78 Accepts]: Start accepts. Automaton has 6195 states and 9242 transitions. Word has length 45 [2023-02-17 00:27:54,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:27:54,802 INFO L495 AbstractCegarLoop]: Abstraction has 6195 states and 9242 transitions. [2023-02-17 00:27:54,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:27:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 6195 states and 9242 transitions. [2023-02-17 00:27:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 00:27:54,804 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:27:54,804 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:27:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-17 00:27:54,804 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:27:54,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:27:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1606233439, now seen corresponding path program 1 times [2023-02-17 00:27:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:27:54,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527011160] [2023-02-17 00:27:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:27:54,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:27:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:27:55,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:27:55,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527011160] [2023-02-17 00:27:55,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527011160] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:27:55,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:27:55,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:27:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585798462] [2023-02-17 00:27:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:27:55,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:27:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:27:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:27:55,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:27:55,041 INFO L87 Difference]: Start difference. First operand 6195 states and 9242 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:27:55,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:27:55,461 INFO L93 Difference]: Finished difference Result 6280 states and 9356 transitions. [2023-02-17 00:27:55,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:27:55,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2023-02-17 00:27:55,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:27:55,485 INFO L225 Difference]: With dead ends: 6280 [2023-02-17 00:27:55,486 INFO L226 Difference]: Without dead ends: 6249 [2023-02-17 00:27:55,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:27:55,492 INFO L413 NwaCegarLoop]: 2535 mSDtfsCounter, 160 mSDsluCounter, 10156 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 12691 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:27:55,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 12691 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:27:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2023-02-17 00:27:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 6188. [2023-02-17 00:27:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6188 states, 4184 states have (on average 1.3773900573613767) internal successors, (5763), 4301 states have internal predecessors, (5763), 1718 states have call successors, (1718), 283 states have call predecessors, (1718), 285 states have return successors, (1751), 1671 states have call predecessors, (1751), 1705 states have call successors, (1751) [2023-02-17 00:27:55,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 9232 transitions. [2023-02-17 00:27:55,963 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 9232 transitions. Word has length 45 [2023-02-17 00:27:55,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:27:55,964 INFO L495 AbstractCegarLoop]: Abstraction has 6188 states and 9232 transitions. [2023-02-17 00:27:55,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 00:27:55,964 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 9232 transitions. [2023-02-17 00:27:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-17 00:27:55,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:27:55,965 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:27:55,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-17 00:27:55,965 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:27:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:27:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash 752543076, now seen corresponding path program 1 times [2023-02-17 00:27:55,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:27:55,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146844623] [2023-02-17 00:27:55,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:27:55,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:27:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-17 00:27:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 00:27:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:27:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:27:56,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:27:56,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146844623] [2023-02-17 00:27:56,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146844623] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:27:56,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:27:56,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 00:27:56,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849776620] [2023-02-17 00:27:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:27:56,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 00:27:56,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:27:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 00:27:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:27:56,240 INFO L87 Difference]: Start difference. First operand 6188 states and 9232 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:28:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:01,719 INFO L93 Difference]: Finished difference Result 7047 states and 10622 transitions. [2023-02-17 00:28:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 00:28:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2023-02-17 00:28:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:01,740 INFO L225 Difference]: With dead ends: 7047 [2023-02-17 00:28:01,741 INFO L226 Difference]: Without dead ends: 7017 [2023-02-17 00:28:01,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:28:01,744 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 1754 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 6639 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 5338 SdHoareTripleChecker+Invalid, 7635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 996 IncrementalHoareTripleChecker+Valid, 6639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:01,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 5338 Invalid, 7635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 6639 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-02-17 00:28:01,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2023-02-17 00:28:02,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 6185. [2023-02-17 00:28:02,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6185 states, 4182 states have (on average 1.3773314203730274) internal successors, (5760), 4299 states have internal predecessors, (5760), 1717 states have call successors, (1717), 283 states have call predecessors, (1717), 285 states have return successors, (1750), 1670 states have call predecessors, (1750), 1704 states have call successors, (1750) [2023-02-17 00:28:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 9227 transitions. [2023-02-17 00:28:02,084 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 9227 transitions. Word has length 53 [2023-02-17 00:28:02,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:02,085 INFO L495 AbstractCegarLoop]: Abstraction has 6185 states and 9227 transitions. [2023-02-17 00:28:02,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:28:02,085 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 9227 transitions. [2023-02-17 00:28:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-17 00:28:02,086 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:02,087 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:02,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-17 00:28:02,087 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:02,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:02,087 INFO L85 PathProgramCache]: Analyzing trace with hash -491344575, now seen corresponding path program 1 times [2023-02-17 00:28:02,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:02,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328561889] [2023-02-17 00:28:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:02,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-17 00:28:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:02,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 00:28:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:02,377 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:02,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:02,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328561889] [2023-02-17 00:28:02,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328561889] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:02,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:02,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 00:28:02,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29402906] [2023-02-17 00:28:02,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:02,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 00:28:02,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:02,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 00:28:02,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:28:02,381 INFO L87 Difference]: Start difference. First operand 6185 states and 9227 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:28:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:07,483 INFO L93 Difference]: Finished difference Result 7044 states and 10617 transitions. [2023-02-17 00:28:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 00:28:07,484 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2023-02-17 00:28:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:07,509 INFO L225 Difference]: With dead ends: 7044 [2023-02-17 00:28:07,509 INFO L226 Difference]: Without dead ends: 7008 [2023-02-17 00:28:07,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:28:07,514 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1766 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 6563 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 5209 SdHoareTripleChecker+Invalid, 7571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1008 IncrementalHoareTripleChecker+Valid, 6563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:07,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 5209 Invalid, 7571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 6563 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-17 00:28:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2023-02-17 00:28:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 6176. [2023-02-17 00:28:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 4176 states have (on average 1.3773946360153257) internal successors, (5752), 4293 states have internal predecessors, (5752), 1715 states have call successors, (1715), 282 states have call predecessors, (1715), 284 states have return successors, (1748), 1668 states have call predecessors, (1748), 1702 states have call successors, (1748) [2023-02-17 00:28:07,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 9215 transitions. [2023-02-17 00:28:07,898 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 9215 transitions. Word has length 50 [2023-02-17 00:28:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:07,899 INFO L495 AbstractCegarLoop]: Abstraction has 6176 states and 9215 transitions. [2023-02-17 00:28:07,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:28:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 9215 transitions. [2023-02-17 00:28:07,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-17 00:28:07,900 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:07,901 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:07,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-17 00:28:07,901 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:07,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 2048298195, now seen corresponding path program 1 times [2023-02-17 00:28:07,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:07,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323215019] [2023-02-17 00:28:07,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:08,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-17 00:28:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:08,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:28:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:08,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 00:28:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:28:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:08,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:08,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323215019] [2023-02-17 00:28:08,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323215019] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:08,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:08,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 00:28:08,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738881419] [2023-02-17 00:28:08,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:08,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 00:28:08,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 00:28:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-17 00:28:08,258 INFO L87 Difference]: Start difference. First operand 6176 states and 9215 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 00:28:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:14,011 INFO L93 Difference]: Finished difference Result 11648 states and 17459 transitions. [2023-02-17 00:28:14,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:28:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2023-02-17 00:28:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:14,032 INFO L225 Difference]: With dead ends: 11648 [2023-02-17 00:28:14,032 INFO L226 Difference]: Without dead ends: 6880 [2023-02-17 00:28:14,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-17 00:28:14,051 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 1758 mSDsluCounter, 5141 mSDsCounter, 0 mSdLazyCounter, 8161 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2068 SdHoareTripleChecker+Valid, 6338 SdHoareTripleChecker+Invalid, 9147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 8161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:14,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 6338 Invalid, 9147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 8161 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-02-17 00:28:14,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2023-02-17 00:28:14,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 6022. [2023-02-17 00:28:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6022 states, 4061 states have (on average 1.3747845358286137) internal successors, (5583), 4163 states have internal predecessors, (5583), 1684 states have call successors, (1684), 270 states have call predecessors, (1684), 276 states have return successors, (1702), 1656 states have call predecessors, (1702), 1674 states have call successors, (1702) [2023-02-17 00:28:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8969 transitions. [2023-02-17 00:28:14,434 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8969 transitions. Word has length 58 [2023-02-17 00:28:14,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:14,434 INFO L495 AbstractCegarLoop]: Abstraction has 6022 states and 8969 transitions. [2023-02-17 00:28:14,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 00:28:14,434 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8969 transitions. [2023-02-17 00:28:14,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-17 00:28:14,436 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:14,436 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:14,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-17 00:28:14,437 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:14,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:14,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1591264843, now seen corresponding path program 1 times [2023-02-17 00:28:14,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:14,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943464479] [2023-02-17 00:28:14,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:14,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-17 00:28:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:28:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943464479] [2023-02-17 00:28:14,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943464479] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:14,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:14,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 00:28:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664116744] [2023-02-17 00:28:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 00:28:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 00:28:14,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:28:14,729 INFO L87 Difference]: Start difference. First operand 6022 states and 8969 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:28:18,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:28:22,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:28:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:26,130 INFO L93 Difference]: Finished difference Result 7026 states and 10550 transitions. [2023-02-17 00:28:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 00:28:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2023-02-17 00:28:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:26,151 INFO L225 Difference]: With dead ends: 7026 [2023-02-17 00:28:26,151 INFO L226 Difference]: Without dead ends: 6932 [2023-02-17 00:28:26,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:28:26,156 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 921 mSDsluCounter, 5698 mSDsCounter, 0 mSdLazyCounter, 7091 mSolverCounterSat, 374 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 7217 SdHoareTripleChecker+Invalid, 7466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 7091 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:26,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 7217 Invalid, 7466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 7091 Invalid, 1 Unknown, 0 Unchecked, 11.0s Time] [2023-02-17 00:28:26,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6932 states. [2023-02-17 00:28:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6932 to 6024. [2023-02-17 00:28:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6024 states, 4063 states have (on average 1.3743539256706867) internal successors, (5584), 4165 states have internal predecessors, (5584), 1684 states have call successors, (1684), 270 states have call predecessors, (1684), 276 states have return successors, (1702), 1656 states have call predecessors, (1702), 1674 states have call successors, (1702) [2023-02-17 00:28:26,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8970 transitions. [2023-02-17 00:28:26,560 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8970 transitions. Word has length 54 [2023-02-17 00:28:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:26,560 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 8970 transitions. [2023-02-17 00:28:26,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 00:28:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8970 transitions. [2023-02-17 00:28:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-17 00:28:26,563 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:26,563 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:26,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-17 00:28:26,563 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:26,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:26,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1790097882, now seen corresponding path program 1 times [2023-02-17 00:28:26,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:26,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527792523] [2023-02-17 00:28:26,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:26,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-17 00:28:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:28:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:26,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527792523] [2023-02-17 00:28:26,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527792523] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:26,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:26,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 00:28:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872161240] [2023-02-17 00:28:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:26,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:28:26,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:28:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:28:26,971 INFO L87 Difference]: Start difference. First operand 6024 states and 8970 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 00:28:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:33,673 INFO L93 Difference]: Finished difference Result 6883 states and 10358 transitions. [2023-02-17 00:28:33,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 00:28:33,674 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2023-02-17 00:28:33,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:33,690 INFO L225 Difference]: With dead ends: 6883 [2023-02-17 00:28:33,690 INFO L226 Difference]: Without dead ends: 6853 [2023-02-17 00:28:33,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:28:33,693 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 1786 mSDsluCounter, 6033 mSDsCounter, 0 mSdLazyCounter, 9569 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 7189 SdHoareTripleChecker+Invalid, 10571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1002 IncrementalHoareTripleChecker+Valid, 9569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:33,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 7189 Invalid, 10571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 9569 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-02-17 00:28:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2023-02-17 00:28:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6022. [2023-02-17 00:28:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6022 states, 4062 states have (on average 1.3741999015263417) internal successors, (5582), 4164 states have internal predecessors, (5582), 1683 states have call successors, (1683), 270 states have call predecessors, (1683), 276 states have return successors, (1701), 1655 states have call predecessors, (1701), 1673 states have call successors, (1701) [2023-02-17 00:28:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8966 transitions. [2023-02-17 00:28:34,046 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8966 transitions. Word has length 55 [2023-02-17 00:28:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:34,046 INFO L495 AbstractCegarLoop]: Abstraction has 6022 states and 8966 transitions. [2023-02-17 00:28:34,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 00:28:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8966 transitions. [2023-02-17 00:28:34,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-17 00:28:34,049 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:34,049 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:34,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-17 00:28:34,049 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:34,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:34,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1976910524, now seen corresponding path program 1 times [2023-02-17 00:28:34,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:34,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374502724] [2023-02-17 00:28:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:34,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-17 00:28:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:34,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:28:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:34,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-17 00:28:34,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:34,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374502724] [2023-02-17 00:28:34,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374502724] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:34,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:34,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 00:28:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160127126] [2023-02-17 00:28:34,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:34,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 00:28:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 00:28:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-17 00:28:34,421 INFO L87 Difference]: Start difference. First operand 6022 states and 8966 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 00:28:39,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:39,754 INFO L93 Difference]: Finished difference Result 6167 states and 9161 transitions. [2023-02-17 00:28:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-17 00:28:39,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2023-02-17 00:28:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:39,767 INFO L225 Difference]: With dead ends: 6167 [2023-02-17 00:28:39,767 INFO L226 Difference]: Without dead ends: 6126 [2023-02-17 00:28:39,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:28:39,769 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1126 mSDsluCounter, 6527 mSDsCounter, 0 mSdLazyCounter, 8452 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1418 SdHoareTripleChecker+Valid, 7783 SdHoareTripleChecker+Invalid, 8625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 8452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:39,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 7783 Invalid, 8625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 8452 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-02-17 00:28:39,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2023-02-17 00:28:40,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6027. [2023-02-17 00:28:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6027 states, 4066 states have (on average 1.3738317757009346) internal successors, (5586), 4167 states have internal predecessors, (5586), 1683 states have call successors, (1683), 270 states have call predecessors, (1683), 277 states have return successors, (1702), 1657 states have call predecessors, (1702), 1673 states have call successors, (1702) [2023-02-17 00:28:40,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 8971 transitions. [2023-02-17 00:28:40,056 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 8971 transitions. Word has length 56 [2023-02-17 00:28:40,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:40,056 INFO L495 AbstractCegarLoop]: Abstraction has 6027 states and 8971 transitions. [2023-02-17 00:28:40,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 00:28:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 8971 transitions. [2023-02-17 00:28:40,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-17 00:28:40,058 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:40,058 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:40,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-17 00:28:40,059 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:40,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:40,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1624955075, now seen corresponding path program 1 times [2023-02-17 00:28:40,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:40,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93791200] [2023-02-17 00:28:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:40,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:40,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-17 00:28:40,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:40,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:28:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-17 00:28:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:40,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:40,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:40,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93791200] [2023-02-17 00:28:40,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93791200] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:40,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:40,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:28:40,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515547778] [2023-02-17 00:28:40,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:40,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:28:40,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:40,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:28:40,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:28:40,313 INFO L87 Difference]: Start difference. First operand 6027 states and 8971 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 00:28:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:28:44,324 INFO L93 Difference]: Finished difference Result 6055 states and 9005 transitions. [2023-02-17 00:28:44,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:28:44,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 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 56 [2023-02-17 00:28:44,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:28:44,343 INFO L225 Difference]: With dead ends: 6055 [2023-02-17 00:28:44,343 INFO L226 Difference]: Without dead ends: 6025 [2023-02-17 00:28:44,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-17 00:28:44,345 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 1116 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 5388 SdHoareTripleChecker+Invalid, 5801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 5634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:28:44,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 5388 Invalid, 5801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-02-17 00:28:44,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6025 states. [2023-02-17 00:28:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6025 to 6020. [2023-02-17 00:28:44,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6020 states, 4061 states have (on average 1.3740458015267176) internal successors, (5580), 4163 states have internal predecessors, (5580), 1682 states have call successors, (1682), 270 states have call predecessors, (1682), 276 states have return successors, (1700), 1654 states have call predecessors, (1700), 1672 states have call successors, (1700) [2023-02-17 00:28:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 8962 transitions. [2023-02-17 00:28:44,663 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 8962 transitions. Word has length 56 [2023-02-17 00:28:44,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:28:44,664 INFO L495 AbstractCegarLoop]: Abstraction has 6020 states and 8962 transitions. [2023-02-17 00:28:44,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 00:28:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 8962 transitions. [2023-02-17 00:28:44,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-17 00:28:44,666 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:28:44,666 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2023-02-17 00:28:44,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-17 00:28:44,666 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:28:44,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:28:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1854765641, now seen corresponding path program 1 times [2023-02-17 00:28:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:28:44,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406488148] [2023-02-17 00:28:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:28:44,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:28:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-17 00:28:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:28:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:28:45,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:28:45,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406488148] [2023-02-17 00:28:45,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406488148] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:28:45,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:28:45,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 00:28:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416130677] [2023-02-17 00:28:45,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:28:45,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-17 00:28:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:28:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 00:28:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-17 00:28:45,009 INFO L87 Difference]: Start difference. First operand 6020 states and 8962 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:28:47,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:28:49,931 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:28:51,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:28:58,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:29:03,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:29:03,535 INFO L93 Difference]: Finished difference Result 6780 states and 10130 transitions. [2023-02-17 00:29:03,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 00:29:03,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2023-02-17 00:29:03,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:29:03,552 INFO L225 Difference]: With dead ends: 6780 [2023-02-17 00:29:03,553 INFO L226 Difference]: Without dead ends: 6693 [2023-02-17 00:29:03,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-02-17 00:29:03,555 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 3034 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 9671 mSolverCounterSat, 1514 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 5945 SdHoareTripleChecker+Invalid, 11187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1514 IncrementalHoareTripleChecker+Valid, 9671 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-02-17 00:29:03,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 5945 Invalid, 11187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1514 Valid, 9671 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2023-02-17 00:29:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2023-02-17 00:29:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 6066. [2023-02-17 00:29:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6066 states, 4097 states have (on average 1.3734439834024896) internal successors, (5627), 4200 states have internal predecessors, (5627), 1686 states have call successors, (1686), 275 states have call predecessors, (1686), 282 states have return successors, (1704), 1658 states have call predecessors, (1704), 1676 states have call successors, (1704) [2023-02-17 00:29:03,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9017 transitions. [2023-02-17 00:29:03,950 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9017 transitions. Word has length 55 [2023-02-17 00:29:03,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:29:03,951 INFO L495 AbstractCegarLoop]: Abstraction has 6066 states and 9017 transitions. [2023-02-17 00:29:03,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:29:03,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9017 transitions. [2023-02-17 00:29:03,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-17 00:29:03,953 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:29:03,953 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:29:03,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-17 00:29:03,954 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:29:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:29:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1116807328, now seen corresponding path program 1 times [2023-02-17 00:29:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:29:03,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244467428] [2023-02-17 00:29:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:29:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:29:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-17 00:29:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:29:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 00:29:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:29:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-02-17 00:29:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:29:04,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:29:04,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244467428] [2023-02-17 00:29:04,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244467428] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:29:04,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:29:04,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-17 00:29:04,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509526778] [2023-02-17 00:29:04,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:29:04,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 00:29:04,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:29:04,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 00:29:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-17 00:29:04,354 INFO L87 Difference]: Start difference. First operand 6066 states and 9017 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 00:29:07,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:29:13,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:29:13,124 INFO L93 Difference]: Finished difference Result 6933 states and 10354 transitions. [2023-02-17 00:29:13,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 00:29:13,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 69 [2023-02-17 00:29:13,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:29:13,138 INFO L225 Difference]: With dead ends: 6933 [2023-02-17 00:29:13,138 INFO L226 Difference]: Without dead ends: 5990 [2023-02-17 00:29:13,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-17 00:29:13,144 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 1771 mSDsluCounter, 5067 mSDsCounter, 0 mSdLazyCounter, 8181 mSolverCounterSat, 1018 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2088 SdHoareTripleChecker+Valid, 6258 SdHoareTripleChecker+Invalid, 9200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1018 IncrementalHoareTripleChecker+Valid, 8181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:29:13,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 6258 Invalid, 9200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1018 Valid, 8181 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2023-02-17 00:29:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2023-02-17 00:29:13,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5243. [2023-02-17 00:29:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5243 states, 3581 states have (on average 1.373080145210835) internal successors, (4917), 3670 states have internal predecessors, (4917), 1419 states have call successors, (1419), 235 states have call predecessors, (1419), 242 states have return successors, (1437), 1396 states have call predecessors, (1437), 1409 states have call successors, (1437) [2023-02-17 00:29:13,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 7773 transitions. [2023-02-17 00:29:13,482 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 7773 transitions. Word has length 69 [2023-02-17 00:29:13,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:29:13,483 INFO L495 AbstractCegarLoop]: Abstraction has 5243 states and 7773 transitions. [2023-02-17 00:29:13,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 00:29:13,483 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 7773 transitions. [2023-02-17 00:29:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-17 00:29:13,485 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:29:13,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:29:13,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-17 00:29:13,486 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:29:13,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:29:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash -599882155, now seen corresponding path program 1 times [2023-02-17 00:29:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:29:13,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525557012] [2023-02-17 00:29:13,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:29:13,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:29:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-17 00:29:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:29:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-17 00:29:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-17 00:29:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-02-17 00:29:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-17 00:29:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:29:13,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:29:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525557012] [2023-02-17 00:29:13,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525557012] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:29:13,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:29:13,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-17 00:29:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662532297] [2023-02-17 00:29:13,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:29:13,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-17 00:29:13,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:29:13,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-17 00:29:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:29:13,883 INFO L87 Difference]: Start difference. First operand 5243 states and 7773 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 00:29:17,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:29:25,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:29:25,669 INFO L93 Difference]: Finished difference Result 6024 states and 9008 transitions. [2023-02-17 00:29:25,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 00:29:25,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2023-02-17 00:29:25,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:29:25,683 INFO L225 Difference]: With dead ends: 6024 [2023-02-17 00:29:25,683 INFO L226 Difference]: Without dead ends: 5971 [2023-02-17 00:29:25,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-17 00:29:25,685 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 2381 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 8598 mSolverCounterSat, 1683 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2691 SdHoareTripleChecker+Valid, 6890 SdHoareTripleChecker+Invalid, 10282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1683 IncrementalHoareTripleChecker+Valid, 8598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:29:25,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 6890 Invalid, 10282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1683 Valid, 8598 Invalid, 1 Unknown, 0 Unchecked, 11.3s Time] [2023-02-17 00:29:25,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2023-02-17 00:29:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5230. [2023-02-17 00:29:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5230 states, 3573 states have (on average 1.373355723481668) internal successors, (4907), 3661 states have internal predecessors, (4907), 1416 states have call successors, (1416), 233 states have call predecessors, (1416), 240 states have return successors, (1434), 1394 states have call predecessors, (1434), 1406 states have call successors, (1434) [2023-02-17 00:29:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 7757 transitions. [2023-02-17 00:29:26,067 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 7757 transitions. Word has length 63 [2023-02-17 00:29:26,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:29:26,067 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 7757 transitions. [2023-02-17 00:29:26,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 00:29:26,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 7757 transitions. [2023-02-17 00:29:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-17 00:29:26,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:29:26,070 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:29:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-17 00:29:26,070 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:29:26,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:29:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash 878874236, now seen corresponding path program 1 times [2023-02-17 00:29:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:29:26,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532486151] [2023-02-17 00:29:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:29:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:29:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-17 00:29:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:29:26,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:29:26,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532486151] [2023-02-17 00:29:26,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532486151] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:29:26,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:29:26,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 00:29:26,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698719845] [2023-02-17 00:29:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:29:26,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:29:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:29:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:29:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:29:26,350 INFO L87 Difference]: Start difference. First operand 5230 states and 7757 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:29:28,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:29:30,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:29:34,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-17 00:29:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:29:37,743 INFO L93 Difference]: Finished difference Result 8069 states and 12050 transitions. [2023-02-17 00:29:37,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 00:29:37,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-02-17 00:29:37,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:29:37,757 INFO L225 Difference]: With dead ends: 8069 [2023-02-17 00:29:37,757 INFO L226 Difference]: Without dead ends: 5714 [2023-02-17 00:29:37,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-17 00:29:37,764 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 2667 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 4416 mSolverCounterSat, 1133 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2824 SdHoareTripleChecker+Valid, 4644 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1133 IncrementalHoareTripleChecker+Valid, 4416 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-02-17 00:29:37,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2824 Valid, 4644 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1133 Valid, 4416 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2023-02-17 00:29:37,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5714 states. [2023-02-17 00:29:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5187. [2023-02-17 00:29:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5187 states, 3534 states have (on average 1.3769100169779287) internal successors, (4866), 3633 states have internal predecessors, (4866), 1415 states have call successors, (1415), 233 states have call predecessors, (1415), 237 states have return successors, (1419), 1379 states have call predecessors, (1419), 1405 states have call successors, (1419) [2023-02-17 00:29:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 7700 transitions. [2023-02-17 00:29:38,143 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 7700 transitions. Word has length 57 [2023-02-17 00:29:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:29:38,143 INFO L495 AbstractCegarLoop]: Abstraction has 5187 states and 7700 transitions. [2023-02-17 00:29:38,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:29:38,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 7700 transitions. [2023-02-17 00:29:38,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-17 00:29:38,146 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:29:38,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:29:38,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-17 00:29:38,146 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:29:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:29:38,146 INFO L85 PathProgramCache]: Analyzing trace with hash -566194308, now seen corresponding path program 1 times [2023-02-17 00:29:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:29:38,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354417260] [2023-02-17 00:29:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:29:38,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:29:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-17 00:29:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:29:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-17 00:29:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:29:38,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354417260] [2023-02-17 00:29:38,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354417260] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:29:38,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:29:38,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 00:29:38,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109101710] [2023-02-17 00:29:38,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:29:38,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 00:29:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:29:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 00:29:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 00:29:38,317 INFO L87 Difference]: Start difference. First operand 5187 states and 7700 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 00:29:41,826 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 []