./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 a31fd051 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-?-a31fd05 [2023-02-15 10:27:23,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 10:27:23,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 10:27:23,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 10:27:23,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 10:27:23,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 10:27:23,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 10:27:23,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 10:27:23,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 10:27:23,282 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 10:27:23,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 10:27:23,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 10:27:23,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 10:27:23,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 10:27:23,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 10:27:23,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 10:27:23,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 10:27:23,286 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 10:27:23,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 10:27:23,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 10:27:23,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 10:27:23,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 10:27:23,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 10:27:23,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 10:27:23,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 10:27:23,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 10:27:23,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 10:27:23,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 10:27:23,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 10:27:23,302 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 10:27:23,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 10:27:23,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 10:27:23,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 10:27:23,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 10:27:23,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 10:27:23,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 10:27:23,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 10:27:23,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 10:27:23,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 10:27:23,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 10:27:23,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 10:27:23,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 10:27:23,321 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 10:27:23,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 10:27:23,321 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 10:27:23,321 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 10:27:23,322 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 10:27:23,322 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 10:27:23,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 10:27:23,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 10:27:23,323 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 10:27:23,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 10:27:23,323 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 10:27:23,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 10:27:23,323 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 10:27:23,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 10:27:23,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 10:27:23,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 10:27:23,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 10:27:23,324 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 10:27:23,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 10:27:23,324 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 10:27:23,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 10:27:23,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 10:27:23,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 10:27:23,325 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 10:27:23,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:27:23,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 10:27:23,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 10:27:23,325 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 10:27:23,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 10:27:23,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 10:27:23,326 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 10:27:23,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 10:27:23,326 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 10:27:23,326 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 10:27:23,326 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 10:27:23,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2023-02-15 10:27:23,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 10:27:23,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 10:27:23,538 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 10:27:23,538 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 10:27:23,539 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 10:27:23,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2023-02-15 10:27:24,608 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 10:27:24,928 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 10:27:24,929 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2023-02-15 10:27:24,964 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1578042e1/2c790723d67942c58d2c939f8f6198e1/FLAGfb563ff77 [2023-02-15 10:27:24,978 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1578042e1/2c790723d67942c58d2c939f8f6198e1 [2023-02-15 10:27:24,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 10:27:24,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 10:27:24,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 10:27:24,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 10:27:24,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 10:27:24,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:27:24" (1/1) ... [2023-02-15 10:27:24,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393a0940 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:24, skipping insertion in model container [2023-02-15 10:27:24,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 10:27:24" (1/1) ... [2023-02-15 10:27:24,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 10:27:25,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 10:27:25,674 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] [2023-02-15 10:27:26,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:27:26,235 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 10:27:26,291 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] [2023-02-15 10:27:26,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 10:27:26,528 INFO L208 MainTranslator]: Completed translation [2023-02-15 10:27:26,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26 WrapperNode [2023-02-15 10:27:26,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 10:27:26,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 10:27:26,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 10:27:26,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 10:27:26,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,728 INFO L138 Inliner]: procedures = 248, calls = 2342, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4671 [2023-02-15 10:27:26,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 10:27:26,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 10:27:26,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 10:27:26,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 10:27:26,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,957 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:26,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 10:27:26,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 10:27:26,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 10:27:26,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 10:27:26,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (1/1) ... [2023-02-15 10:27:27,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 10:27:27,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:27,050 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) [2023-02-15 10:27:27,056 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 [2023-02-15 10:27:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2023-02-15 10:27:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2023-02-15 10:27:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2023-02-15 10:27:27,076 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2023-02-15 10:27:27,076 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2023-02-15 10:27:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2023-02-15 10:27:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2023-02-15 10:27:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2023-02-15 10:27:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2023-02-15 10:27:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2023-02-15 10:27:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-02-15 10:27:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-15 10:27:27,077 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2023-02-15 10:27:27,077 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2023-02-15 10:27:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2023-02-15 10:27:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2023-02-15 10:27:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2023-02-15 10:27:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2023-02-15 10:27:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-02-15 10:27:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-02-15 10:27:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2023-02-15 10:27:27,078 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2023-02-15 10:27:27,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 10:27:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 10:27:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2023-02-15 10:27:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2023-02-15 10:27:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2023-02-15 10:27:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2023-02-15 10:27:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2023-02-15 10:27:27,079 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2023-02-15 10:27:27,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-15 10:27:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2023-02-15 10:27:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2023-02-15 10:27:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2023-02-15 10:27:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2023-02-15 10:27:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-15 10:27:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2023-02-15 10:27:27,080 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2023-02-15 10:27:27,080 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2023-02-15 10:27:27,081 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2023-02-15 10:27:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2023-02-15 10:27:27,081 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2023-02-15 10:27:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2023-02-15 10:27:27,081 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2023-02-15 10:27:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-15 10:27:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-15 10:27:27,081 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2023-02-15 10:27:27,081 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2023-02-15 10:27:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2023-02-15 10:27:27,082 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2023-02-15 10:27:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2023-02-15 10:27:27,082 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2023-02-15 10:27:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2023-02-15 10:27:27,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2023-02-15 10:27:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2023-02-15 10:27:27,082 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2023-02-15 10:27:27,082 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2023-02-15 10:27:27,083 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2023-02-15 10:27:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2023-02-15 10:27:27,083 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2023-02-15 10:27:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-02-15 10:27:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2023-02-15 10:27:27,083 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2023-02-15 10:27:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2023-02-15 10:27:27,083 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2023-02-15 10:27:27,083 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2023-02-15 10:27:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2023-02-15 10:27:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2023-02-15 10:27:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2023-02-15 10:27:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-02-15 10:27:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2023-02-15 10:27:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2023-02-15 10:27:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-15 10:27:27,084 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2023-02-15 10:27:27,084 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2023-02-15 10:27:27,085 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2023-02-15 10:27:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2023-02-15 10:27:27,085 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2023-02-15 10:27:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2023-02-15 10:27:27,085 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2023-02-15 10:27:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2023-02-15 10:27:27,085 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2023-02-15 10:27:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2023-02-15 10:27:27,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-02-15 10:27:27,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-02-15 10:27:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2023-02-15 10:27:27,086 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2023-02-15 10:27:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2023-02-15 10:27:27,086 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2023-02-15 10:27:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2023-02-15 10:27:27,086 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2023-02-15 10:27:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2023-02-15 10:27:27,086 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2023-02-15 10:27:27,086 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2023-02-15 10:27:27,087 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2023-02-15 10:27:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2023-02-15 10:27:27,087 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2023-02-15 10:27:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-15 10:27:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2023-02-15 10:27:27,087 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2023-02-15 10:27:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2023-02-15 10:27:27,087 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2023-02-15 10:27:27,087 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2023-02-15 10:27:27,088 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2023-02-15 10:27:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-15 10:27:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2023-02-15 10:27:27,088 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2023-02-15 10:27:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2023-02-15 10:27:27,088 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2023-02-15 10:27:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 10:27:27,088 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2023-02-15 10:27:27,088 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2023-02-15 10:27:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2023-02-15 10:27:27,089 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2023-02-15 10:27:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2023-02-15 10:27:27,089 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2023-02-15 10:27:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-15 10:27:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2023-02-15 10:27:27,089 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2023-02-15 10:27:27,089 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2023-02-15 10:27:27,089 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2023-02-15 10:27:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2023-02-15 10:27:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2023-02-15 10:27:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2023-02-15 10:27:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2023-02-15 10:27:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2023-02-15 10:27:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2023-02-15 10:27:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2023-02-15 10:27:27,090 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2023-02-15 10:27:27,090 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2023-02-15 10:27:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2023-02-15 10:27:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2023-02-15 10:27:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2023-02-15 10:27:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2023-02-15 10:27:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2023-02-15 10:27:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2023-02-15 10:27:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2023-02-15 10:27:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2023-02-15 10:27:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2023-02-15 10:27:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2023-02-15 10:27:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2023-02-15 10:27:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2023-02-15 10:27:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2023-02-15 10:27:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2023-02-15 10:27:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2023-02-15 10:27:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 10:27:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2023-02-15 10:27:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2023-02-15 10:27:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2023-02-15 10:27:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2023-02-15 10:27:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2023-02-15 10:27:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2023-02-15 10:27:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2023-02-15 10:27:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2023-02-15 10:27:27,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 10:27:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 10:27:27,728 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 10:27:27,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 10:27:27,783 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:27,853 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2023-02-15 10:27:27,854 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2023-02-15 10:27:27,859 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:27,917 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2023-02-15 10:27:27,918 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2023-02-15 10:27:28,199 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,238 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2023-02-15 10:27:28,238 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2023-02-15 10:27:28,483 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,486 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 10:27:28,486 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 10:27:28,550 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,563 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2023-02-15 10:27:28,563 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2023-02-15 10:27:28,626 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,630 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2023-02-15 10:27:28,630 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2023-02-15 10:27:28,632 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2023-02-15 10:27:28,646 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2023-02-15 10:27:28,647 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,676 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2023-02-15 10:27:28,677 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2023-02-15 10:27:28,857 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,859 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,859 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,860 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,860 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,861 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,867 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,887 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,890 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,891 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,891 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:28,892 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-02-15 10:27:34,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2023-02-15 10:27:34,743 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##412: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##413: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##477: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##476: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##531: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##530: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##521: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##520: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2023-02-15 10:27:34,744 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2023-02-15 10:27:34,745 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2023-02-15 10:27:34,745 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2023-02-15 10:27:34,745 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##576: assume !false; [2023-02-15 10:27:34,745 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##575: assume false; [2023-02-15 10:27:34,745 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2023-02-15 10:27:34,801 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 10:27:34,812 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 10:27:34,812 INFO L300 CfgBuilder]: Removed 33 assume(true) statements. [2023-02-15 10:27:34,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:27:34 BoogieIcfgContainer [2023-02-15 10:27:34,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 10:27:34,816 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 10:27:34,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 10:27:34,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 10:27:34,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 10:27:24" (1/3) ... [2023-02-15 10:27:34,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b00fb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:27:34, skipping insertion in model container [2023-02-15 10:27:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 10:27:26" (2/3) ... [2023-02-15 10:27:34,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b00fb21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 10:27:34, skipping insertion in model container [2023-02-15 10:27:34,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 10:27:34" (3/3) ... [2023-02-15 10:27:34,820 INFO L112 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2023-02-15 10:27:34,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 10:27:34,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 10:27:34,881 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 10:27:34,886 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;@b61faa6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 10:27:34,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 10:27:34,894 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) [2023-02-15 10:27:34,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 10:27:34,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:34,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:27:34,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:34,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:34,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1747724696, now seen corresponding path program 1 times [2023-02-15 10:27:34,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:34,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595793265] [2023-02-15 10:27:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:34,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:35,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:35,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595793265] [2023-02-15 10:27:35,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595793265] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:35,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:35,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 10:27:35,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342225031] [2023-02-15 10:27:35,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:35,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 10:27:35,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:35,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 10:27:35,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 10:27:35,264 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) [2023-02-15 10:27:35,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:35,400 INFO L93 Difference]: Finished difference Result 3450 states and 5434 transitions. [2023-02-15 10:27:35,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 10:27:35,402 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 [2023-02-15 10:27:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:35,428 INFO L225 Difference]: With dead ends: 3450 [2023-02-15 10:27:35,428 INFO L226 Difference]: Without dead ends: 1721 [2023-02-15 10:27:35,440 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 [2023-02-15 10:27:35,444 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 [2023-02-15 10:27:35,445 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] [2023-02-15 10:27:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2023-02-15 10:27:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1721. [2023-02-15 10:27:35,552 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) [2023-02-15 10:27:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1721 states to 1721 states and 2564 transitions. [2023-02-15 10:27:35,562 INFO L78 Accepts]: Start accepts. Automaton has 1721 states and 2564 transitions. Word has length 15 [2023-02-15 10:27:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:35,563 INFO L495 AbstractCegarLoop]: Abstraction has 1721 states and 2564 transitions. [2023-02-15 10:27:35,564 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) [2023-02-15 10:27:35,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1721 states and 2564 transitions. [2023-02-15 10:27:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 10:27:35,565 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:35,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:27:35,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 10:27:35,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:35,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:35,566 INFO L85 PathProgramCache]: Analyzing trace with hash 12693346, now seen corresponding path program 1 times [2023-02-15 10:27:35,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:35,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691470315] [2023-02-15 10:27:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:35,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:35,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:35,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:35,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:35,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691470315] [2023-02-15 10:27:35,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691470315] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:35,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:35,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:27:35,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597731240] [2023-02-15 10:27:35,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:35,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:27:35,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:27:35,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:27:35,741 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) [2023-02-15 10:27:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:35,809 INFO L93 Difference]: Finished difference Result 3440 states and 5126 transitions. [2023-02-15 10:27:35,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:27:35,809 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 [2023-02-15 10:27:35,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:35,817 INFO L225 Difference]: With dead ends: 3440 [2023-02-15 10:27:35,817 INFO L226 Difference]: Without dead ends: 1723 [2023-02-15 10:27:35,823 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 [2023-02-15 10:27:35,823 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 [2023-02-15 10:27:35,824 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] [2023-02-15 10:27:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2023-02-15 10:27:35,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1722. [2023-02-15 10:27:35,875 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) [2023-02-15 10:27:35,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2565 transitions. [2023-02-15 10:27:35,883 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2565 transitions. Word has length 15 [2023-02-15 10:27:35,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:35,883 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2565 transitions. [2023-02-15 10:27:35,883 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) [2023-02-15 10:27:35,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2565 transitions. [2023-02-15 10:27:35,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 10:27:35,884 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:35,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:27:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 10:27:35,885 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:35,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:35,885 INFO L85 PathProgramCache]: Analyzing trace with hash 25759584, now seen corresponding path program 1 times [2023-02-15 10:27:35,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:35,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602385876] [2023-02-15 10:27:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:36,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:36,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:36,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602385876] [2023-02-15 10:27:36,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602385876] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:27:36,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982475720] [2023-02-15 10:27:36,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:36,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:27:36,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:36,081 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) [2023-02-15 10:27:36,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 10:27:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:36,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 10:27:36,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:27:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:27:36,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:27:36,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982475720] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:36,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 10:27:36,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-15 10:27:36,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891573426] [2023-02-15 10:27:36,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:36,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:27:36,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:36,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:27:36,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:36,625 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) [2023-02-15 10:27:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:36,685 INFO L93 Difference]: Finished difference Result 1792 states and 2653 transitions. [2023-02-15 10:27:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:27:36,685 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 [2023-02-15 10:27:36,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:36,692 INFO L225 Difference]: With dead ends: 1792 [2023-02-15 10:27:36,692 INFO L226 Difference]: Without dead ends: 1773 [2023-02-15 10:27:36,693 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 [2023-02-15 10:27:36,694 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 [2023-02-15 10:27:36,694 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] [2023-02-15 10:27:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2023-02-15 10:27:36,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1764. [2023-02-15 10:27:36,737 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) [2023-02-15 10:27:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2617 transitions. [2023-02-15 10:27:36,744 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2617 transitions. Word has length 17 [2023-02-15 10:27:36,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:36,744 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2617 transitions. [2023-02-15 10:27:36,744 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) [2023-02-15 10:27:36,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2617 transitions. [2023-02-15 10:27:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 10:27:36,745 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:36,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:27:36,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 10:27:36,953 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 [2023-02-15 10:27:36,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:36,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 11414675, now seen corresponding path program 1 times [2023-02-15 10:27:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:36,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709809545] [2023-02-15 10:27:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:37,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:37,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:37,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709809545] [2023-02-15 10:27:37,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709809545] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:27:37,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658962961] [2023-02-15 10:27:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:37,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:27:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:37,109 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) [2023-02-15 10:27:37,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 10:27:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:37,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:27:37,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:27:37,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 10:27:37,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 10:27:37,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658962961] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:37,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 10:27:37,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-02-15 10:27:37,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416166028] [2023-02-15 10:27:37,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:37,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:27:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:27:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:37,699 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) [2023-02-15 10:27:37,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:37,837 INFO L93 Difference]: Finished difference Result 1780 states and 2636 transitions. [2023-02-15 10:27:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:27:37,838 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 [2023-02-15 10:27:37,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:37,845 INFO L225 Difference]: With dead ends: 1780 [2023-02-15 10:27:37,845 INFO L226 Difference]: Without dead ends: 1764 [2023-02-15 10:27:37,846 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 [2023-02-15 10:27:37,847 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 [2023-02-15 10:27:37,847 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] [2023-02-15 10:27:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2023-02-15 10:27:37,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1764. [2023-02-15 10:27:37,909 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) [2023-02-15 10:27:37,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2616 transitions. [2023-02-15 10:27:37,916 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2616 transitions. Word has length 17 [2023-02-15 10:27:37,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:37,916 INFO L495 AbstractCegarLoop]: Abstraction has 1764 states and 2616 transitions. [2023-02-15 10:27:37,916 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) [2023-02-15 10:27:37,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2616 transitions. [2023-02-15 10:27:37,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 10:27:37,917 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:37,917 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] [2023-02-15 10:27:37,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 10:27:38,124 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 [2023-02-15 10:27:38,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:38,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:38,125 INFO L85 PathProgramCache]: Analyzing trace with hash -478438479, now seen corresponding path program 1 times [2023-02-15 10:27:38,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:38,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227328192] [2023-02-15 10:27:38,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:38,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:38,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:38,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:38,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227328192] [2023-02-15 10:27:38,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227328192] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 10:27:38,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130314727] [2023-02-15 10:27:38,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:38,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 10:27:38,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 10:27:38,260 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) [2023-02-15 10:27:38,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 10:27:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:38,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 10:27:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 10:27:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:38,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 10:27:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 10:27:38,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130314727] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 10:27:38,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 10:27:38,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-15 10:27:38,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955586870] [2023-02-15 10:27:38,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 10:27:38,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:27:38,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:38,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:27:38,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:27:38,802 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) [2023-02-15 10:27:38,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:38,897 INFO L93 Difference]: Finished difference Result 3529 states and 5235 transitions. [2023-02-15 10:27:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:27:38,898 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 [2023-02-15 10:27:38,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:38,905 INFO L225 Difference]: With dead ends: 3529 [2023-02-15 10:27:38,905 INFO L226 Difference]: Without dead ends: 1770 [2023-02-15 10:27:38,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:27:38,943 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:38,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10238 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:27:38,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2023-02-15 10:27:38,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1770. [2023-02-15 10:27:38,987 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) [2023-02-15 10:27:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2622 transitions. [2023-02-15 10:27:38,993 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2622 transitions. Word has length 22 [2023-02-15 10:27:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 1770 states and 2622 transitions. [2023-02-15 10:27:38,993 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) [2023-02-15 10:27:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2622 transitions. [2023-02-15 10:27:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 10:27:38,996 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:38,996 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] [2023-02-15 10:27:39,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 10:27:39,205 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 [2023-02-15 10:27:39,205 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:39,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:39,206 INFO L85 PathProgramCache]: Analyzing trace with hash 307295479, now seen corresponding path program 2 times [2023-02-15 10:27:39,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:39,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617250609] [2023-02-15 10:27:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:39,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:39,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:27:39,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:39,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617250609] [2023-02-15 10:27:39,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617250609] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:39,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:27:39,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110309450] [2023-02-15 10:27:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:27:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:39,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:27:39,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:27:39,444 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) [2023-02-15 10:27:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:39,724 INFO L93 Difference]: Finished difference Result 4499 states and 6726 transitions. [2023-02-15 10:27:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:27:39,725 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 [2023-02-15 10:27:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:39,743 INFO L225 Difference]: With dead ends: 4499 [2023-02-15 10:27:39,743 INFO L226 Difference]: Without dead ends: 3330 [2023-02-15 10:27:39,748 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 [2023-02-15 10:27:39,750 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 [2023-02-15 10:27:39,750 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] [2023-02-15 10:27:39,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2023-02-15 10:27:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3299. [2023-02-15 10:27:39,856 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) [2023-02-15 10:27:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4928 transitions. [2023-02-15 10:27:39,866 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4928 transitions. Word has length 28 [2023-02-15 10:27:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:39,866 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 4928 transitions. [2023-02-15 10:27:39,866 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) [2023-02-15 10:27:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4928 transitions. [2023-02-15 10:27:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 10:27:39,868 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:39,868 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] [2023-02-15 10:27:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 10:27:39,868 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1796297636, now seen corresponding path program 1 times [2023-02-15 10:27:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086950928] [2023-02-15 10:27:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:40,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-15 10:27:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:40,034 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:27:40,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:40,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086950928] [2023-02-15 10:27:40,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086950928] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:40,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:40,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:27:40,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258880795] [2023-02-15 10:27:40,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:40,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:27:40,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:27:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:27:40,036 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) [2023-02-15 10:27:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:44,251 INFO L93 Difference]: Finished difference Result 4067 states and 6046 transitions. [2023-02-15 10:27:44,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 10:27:44,252 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 [2023-02-15 10:27:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:44,267 INFO L225 Difference]: With dead ends: 4067 [2023-02-15 10:27:44,267 INFO L226 Difference]: Without dead ends: 4062 [2023-02-15 10:27:44,269 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 [2023-02-15 10:27:44,270 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 2540 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 3436 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 4.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:44,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2864 Valid, 3264 Invalid, 4588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 3436 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-02-15 10:27:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4062 states. [2023-02-15 10:27:44,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4062 to 4033. [2023-02-15 10:27:44,402 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) [2023-02-15 10:27:44,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 6001 transitions. [2023-02-15 10:27:44,418 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 6001 transitions. Word has length 40 [2023-02-15 10:27:44,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:44,419 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 6001 transitions. [2023-02-15 10:27:44,419 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) [2023-02-15 10:27:44,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 6001 transitions. [2023-02-15 10:27:44,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 10:27:44,423 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:44,423 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] [2023-02-15 10:27:44,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 10:27:44,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:44,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 601875904, now seen corresponding path program 1 times [2023-02-15 10:27:44,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:44,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371218009] [2023-02-15 10:27:44,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:44,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:44,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-15 10:27:44,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:27:44,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:44,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371218009] [2023-02-15 10:27:44,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371218009] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:44,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:44,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:27:44,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083223399] [2023-02-15 10:27:44,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:44,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:27:44,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:44,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:27:44,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:27:44,680 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) [2023-02-15 10:27:50,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:50,105 INFO L93 Difference]: Finished difference Result 4080 states and 6058 transitions. [2023-02-15 10:27:50,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:50,106 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 [2023-02-15 10:27:50,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:50,129 INFO L225 Difference]: With dead ends: 4080 [2023-02-15 10:27:50,129 INFO L226 Difference]: Without dead ends: 4071 [2023-02-15 10:27:50,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-15 10:27:50,131 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 5848 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 5206 mSolverCounterSat, 3669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 5.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:50,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5980 Valid, 3937 Invalid, 8875 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3669 Valid, 5206 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-02-15 10:27:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2023-02-15 10:27:50,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 4033. [2023-02-15 10:27:50,266 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) [2023-02-15 10:27:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5999 transitions. [2023-02-15 10:27:50,278 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5999 transitions. Word has length 41 [2023-02-15 10:27:50,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:50,279 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 5999 transitions. [2023-02-15 10:27:50,279 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) [2023-02-15 10:27:50,279 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5999 transitions. [2023-02-15 10:27:50,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 10:27:50,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:50,281 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] [2023-02-15 10:27:50,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 10:27:50,282 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:50,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:50,282 INFO L85 PathProgramCache]: Analyzing trace with hash 588958024, now seen corresponding path program 1 times [2023-02-15 10:27:50,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:50,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347855658] [2023-02-15 10:27:50,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:50,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-15 10:27:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:50,488 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:27:50,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:50,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347855658] [2023-02-15 10:27:50,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347855658] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:50,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:50,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:27:50,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961484873] [2023-02-15 10:27:50,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:50,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:27:50,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:50,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:27:50,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:27:50,491 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) [2023-02-15 10:27:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:55,605 INFO L93 Difference]: Finished difference Result 4073 states and 6047 transitions. [2023-02-15 10:27:55,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:27:55,605 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 [2023-02-15 10:27:55,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:55,626 INFO L225 Difference]: With dead ends: 4073 [2023-02-15 10:27:55,627 INFO L226 Difference]: Without dead ends: 4064 [2023-02-15 10:27:55,628 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 [2023-02-15 10:27:55,641 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 5779 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 5274 mSolverCounterSat, 3579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.7s IncrementalHoareTripleChecker+Time [2023-02-15 10:27:55,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5911 Valid, 3932 Invalid, 8853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3579 Valid, 5274 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-02-15 10:27:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2023-02-15 10:27:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 4033. [2023-02-15 10:27:55,909 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) [2023-02-15 10:27:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4033 states to 4033 states and 5997 transitions. [2023-02-15 10:27:55,922 INFO L78 Accepts]: Start accepts. Automaton has 4033 states and 5997 transitions. Word has length 42 [2023-02-15 10:27:55,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:55,923 INFO L495 AbstractCegarLoop]: Abstraction has 4033 states and 5997 transitions. [2023-02-15 10:27:55,924 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) [2023-02-15 10:27:55,924 INFO L276 IsEmpty]: Start isEmpty. Operand 4033 states and 5997 transitions. [2023-02-15 10:27:55,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 10:27:55,925 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:55,925 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] [2023-02-15 10:27:55,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 10:27:55,926 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:55,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1278856833, now seen corresponding path program 1 times [2023-02-15 10:27:55,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:55,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081384728] [2023-02-15 10:27:55,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:55,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:27:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:56,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081384728] [2023-02-15 10:27:56,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081384728] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:56,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:56,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:27:56,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176259867] [2023-02-15 10:27:56,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:56,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:27:56,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:56,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:27:56,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:27:56,163 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) [2023-02-15 10:27:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:27:56,387 INFO L93 Difference]: Finished difference Result 6594 states and 9782 transitions. [2023-02-15 10:27:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:27:56,387 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 [2023-02-15 10:27:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:27:56,413 INFO L225 Difference]: With dead ends: 6594 [2023-02-15 10:27:56,414 INFO L226 Difference]: Without dead ends: 6291 [2023-02-15 10:27:56,418 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 [2023-02-15 10:27:56,419 INFO L413 NwaCegarLoop]: 3671 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, 5495 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 [2023-02-15 10:27:56,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2445 Valid, 5495 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 10:27:56,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6291 states. [2023-02-15 10:27:56,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6291 to 6210. [2023-02-15 10:27:56,686 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) [2023-02-15 10:27:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6210 states to 6210 states and 9272 transitions. [2023-02-15 10:27:56,706 INFO L78 Accepts]: Start accepts. Automaton has 6210 states and 9272 transitions. Word has length 43 [2023-02-15 10:27:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:27:56,706 INFO L495 AbstractCegarLoop]: Abstraction has 6210 states and 9272 transitions. [2023-02-15 10:27:56,706 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) [2023-02-15 10:27:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6210 states and 9272 transitions. [2023-02-15 10:27:56,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 10:27:56,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:27:56,708 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] [2023-02-15 10:27:56,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 10:27:56,708 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:27:56,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:27:56,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1132671081, now seen corresponding path program 1 times [2023-02-15 10:27:56,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:27:56,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371005611] [2023-02-15 10:27:56,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:27:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:27:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-02-15 10:27:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:27:56,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:27:56,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:27:56,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371005611] [2023-02-15 10:27:56,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371005611] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:27:56,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:27:56,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 10:27:56,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930500746] [2023-02-15 10:27:56,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:27:56,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 10:27:56,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:27:56,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 10:27:56,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:27:56,958 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) [2023-02-15 10:28:00,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:00,156 INFO L93 Difference]: Finished difference Result 6238 states and 9306 transitions. [2023-02-15 10:28:00,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 10:28:00,157 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 [2023-02-15 10:28:00,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:00,204 INFO L225 Difference]: With dead ends: 6238 [2023-02-15 10:28:00,204 INFO L226 Difference]: Without dead ends: 6192 [2023-02-15 10:28:00,211 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 [2023-02-15 10:28:00,212 INFO L413 NwaCegarLoop]: 1272 mSDtfsCounter, 1095 mSDsluCounter, 3196 mSDsCounter, 0 mSdLazyCounter, 4257 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.9s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:00,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 4468 Invalid, 4442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4257 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-15 10:28:00,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2023-02-15 10:28:00,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 6191. [2023-02-15 10:28:00,536 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) [2023-02-15 10:28:00,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9242 transitions. [2023-02-15 10:28:00,553 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9242 transitions. Word has length 43 [2023-02-15 10:28:00,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:00,554 INFO L495 AbstractCegarLoop]: Abstraction has 6191 states and 9242 transitions. [2023-02-15 10:28:00,554 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) [2023-02-15 10:28:00,554 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9242 transitions. [2023-02-15 10:28:00,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 10:28:00,555 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:00,556 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] [2023-02-15 10:28:00,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 10:28:00,556 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:00,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:00,556 INFO L85 PathProgramCache]: Analyzing trace with hash -323587381, now seen corresponding path program 1 times [2023-02-15 10:28:00,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:00,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879011492] [2023-02-15 10:28:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:00,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:28:00,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:00,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879011492] [2023-02-15 10:28:00,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879011492] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:28:00,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:28:00,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 10:28:00,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240454149] [2023-02-15 10:28:00,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:28:00,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 10:28:00,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:00,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 10:28:00,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 10:28:00,748 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) [2023-02-15 10:28:00,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:00,984 INFO L93 Difference]: Finished difference Result 6194 states and 9244 transitions. [2023-02-15 10:28:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 10:28:00,985 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 [2023-02-15 10:28:00,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:01,004 INFO L225 Difference]: With dead ends: 6194 [2023-02-15 10:28:01,004 INFO L226 Difference]: Without dead ends: 6191 [2023-02-15 10:28:01,009 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 [2023-02-15 10:28:01,010 INFO L413 NwaCegarLoop]: 2516 mSDtfsCounter, 12 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:01,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4974 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 10:28:01,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6191 states. [2023-02-15 10:28:01,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6191 to 6191. [2023-02-15 10:28:01,278 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) [2023-02-15 10:28:01,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6191 states to 6191 states and 9241 transitions. [2023-02-15 10:28:01,297 INFO L78 Accepts]: Start accepts. Automaton has 6191 states and 9241 transitions. Word has length 43 [2023-02-15 10:28:01,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:01,298 INFO L495 AbstractCegarLoop]: Abstraction has 6191 states and 9241 transitions. [2023-02-15 10:28:01,298 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) [2023-02-15 10:28:01,298 INFO L276 IsEmpty]: Start isEmpty. Operand 6191 states and 9241 transitions. [2023-02-15 10:28:01,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 10:28:01,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:01,299 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] [2023-02-15 10:28:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 10:28:01,300 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:01,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:01,300 INFO L85 PathProgramCache]: Analyzing trace with hash -2052618280, now seen corresponding path program 1 times [2023-02-15 10:28:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:01,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647086748] [2023-02-15 10:28:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:01,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 10:28:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:01,617 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:28:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:01,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647086748] [2023-02-15 10:28:01,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647086748] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:28:01,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:28:01,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:28:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131490966] [2023-02-15 10:28:01,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:28:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:28:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:28:01,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:28:01,621 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) [2023-02-15 10:28:05,216 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 [] [2023-02-15 10:28:08,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:13,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:13,422 INFO L93 Difference]: Finished difference Result 12680 states and 19034 transitions. [2023-02-15 10:28:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:28:13,422 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 [2023-02-15 10:28:13,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:13,510 INFO L225 Difference]: With dead ends: 12680 [2023-02-15 10:28:13,510 INFO L226 Difference]: Without dead ends: 7064 [2023-02-15 10:28:13,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:28:13,537 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 [2023-02-15 10:28:13,537 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] [2023-02-15 10:28:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7064 states. [2023-02-15 10:28:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7064 to 6200. [2023-02-15 10:28:13,839 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) [2023-02-15 10:28:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6200 states to 6200 states and 9253 transitions. [2023-02-15 10:28:13,858 INFO L78 Accepts]: Start accepts. Automaton has 6200 states and 9253 transitions. Word has length 46 [2023-02-15 10:28:13,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:13,859 INFO L495 AbstractCegarLoop]: Abstraction has 6200 states and 9253 transitions. [2023-02-15 10:28:13,859 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) [2023-02-15 10:28:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 6200 states and 9253 transitions. [2023-02-15 10:28:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-15 10:28:13,861 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:13,861 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] [2023-02-15 10:28:13,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 10:28:13,861 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:13,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:13,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1841267367, now seen corresponding path program 1 times [2023-02-15 10:28:13,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:13,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522969353] [2023-02-15 10:28:13,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:13,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:14,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 10:28:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:28:14,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:14,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522969353] [2023-02-15 10:28:14,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522969353] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:28:14,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:28:14,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:28:14,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225475519] [2023-02-15 10:28:14,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:28:14,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:28:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:14,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:28:14,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:28:14,176 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) [2023-02-15 10:28:17,365 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 [] [2023-02-15 10:28:23,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:23,316 INFO L93 Difference]: Finished difference Result 7096 states and 10689 transitions. [2023-02-15 10:28:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:28:23,316 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 [2023-02-15 10:28:23,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:23,369 INFO L225 Difference]: With dead ends: 7096 [2023-02-15 10:28:23,369 INFO L226 Difference]: Without dead ends: 7057 [2023-02-15 10:28:23,373 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 [2023-02-15 10:28:23,374 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 755 mSDsluCounter, 5949 mSDsCounter, 0 mSdLazyCounter, 7050 mSolverCounterSat, 366 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s 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, 8.8s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:23,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 7469 Invalid, 7417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 7050 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2023-02-15 10:28:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7057 states. [2023-02-15 10:28:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7057 to 6194. [2023-02-15 10:28:23,673 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) [2023-02-15 10:28:23,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6194 states to 6194 states and 9244 transitions. [2023-02-15 10:28:23,690 INFO L78 Accepts]: Start accepts. Automaton has 6194 states and 9244 transitions. Word has length 46 [2023-02-15 10:28:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:23,690 INFO L495 AbstractCegarLoop]: Abstraction has 6194 states and 9244 transitions. [2023-02-15 10:28:23,690 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) [2023-02-15 10:28:23,690 INFO L276 IsEmpty]: Start isEmpty. Operand 6194 states and 9244 transitions. [2023-02-15 10:28:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 10:28:23,692 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:23,692 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] [2023-02-15 10:28:23,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 10:28:23,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:23,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1771103344, now seen corresponding path program 1 times [2023-02-15 10:28:23,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:23,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435606537] [2023-02-15 10:28:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:23,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 10:28:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:23,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:28:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:24,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435606537] [2023-02-15 10:28:24,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435606537] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:28:24,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:28:24,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:28:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346990616] [2023-02-15 10:28:24,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:28:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:28:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:24,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:28:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:28:24,011 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) [2023-02-15 10:28:27,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:31,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:36,872 INFO L93 Difference]: Finished difference Result 7054 states and 10635 transitions. [2023-02-15 10:28:36,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:28:36,872 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 [2023-02-15 10:28:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:36,934 INFO L225 Difference]: With dead ends: 7054 [2023-02-15 10:28:36,934 INFO L226 Difference]: Without dead ends: 7024 [2023-02-15 10:28:36,939 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 [2023-02-15 10:28:36,940 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 1133 mSDsluCounter, 6899 mSDsCounter, 0 mSdLazyCounter, 10085 mSolverCounterSat, 391 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s 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, 12.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:36,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 8112 Invalid, 10478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [391 Valid, 10085 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2023-02-15 10:28:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2023-02-15 10:28:37,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 6192. [2023-02-15 10:28:37,369 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) [2023-02-15 10:28:37,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9240 transitions. [2023-02-15 10:28:37,389 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9240 transitions. Word has length 47 [2023-02-15 10:28:37,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:37,389 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 9240 transitions. [2023-02-15 10:28:37,389 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) [2023-02-15 10:28:37,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9240 transitions. [2023-02-15 10:28:37,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 10:28:37,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:37,390 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] [2023-02-15 10:28:37,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-15 10:28:37,391 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1404767676, now seen corresponding path program 1 times [2023-02-15 10:28:37,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:37,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908250672] [2023-02-15 10:28:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:37,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:37,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-15 10:28:37,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:28:37,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:37,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908250672] [2023-02-15 10:28:37,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908250672] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:28:37,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:28:37,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:28:37,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965911052] [2023-02-15 10:28:37,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:28:37,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:28:37,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:37,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:28:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:28:37,800 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) [2023-02-15 10:28:40,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:42,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:46,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:51,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:28:54,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:28:55,000 INFO L93 Difference]: Finished difference Result 8304 states and 12651 transitions. [2023-02-15 10:28:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:28:55,000 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 [2023-02-15 10:28:55,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:28:55,027 INFO L225 Difference]: With dead ends: 8304 [2023-02-15 10:28:55,027 INFO L226 Difference]: Without dead ends: 8264 [2023-02-15 10:28:55,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:28:55,033 INFO L413 NwaCegarLoop]: 1955 mSDtfsCounter, 1154 mSDsluCounter, 10832 mSDsCounter, 0 mSdLazyCounter, 10008 mSolverCounterSat, 381 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 12787 SdHoareTripleChecker+Invalid, 10393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 10008 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-02-15 10:28:55,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1456 Valid, 12787 Invalid, 10393 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [381 Valid, 10008 Invalid, 4 Unknown, 0 Unchecked, 16.7s Time] [2023-02-15 10:28:55,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8264 states. [2023-02-15 10:28:55,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8264 to 6197. [2023-02-15 10:28:55,423 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) [2023-02-15 10:28:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6197 states to 6197 states and 9247 transitions. [2023-02-15 10:28:55,442 INFO L78 Accepts]: Start accepts. Automaton has 6197 states and 9247 transitions. Word has length 50 [2023-02-15 10:28:55,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:28:55,443 INFO L495 AbstractCegarLoop]: Abstraction has 6197 states and 9247 transitions. [2023-02-15 10:28:55,443 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) [2023-02-15 10:28:55,443 INFO L276 IsEmpty]: Start isEmpty. Operand 6197 states and 9247 transitions. [2023-02-15 10:28:55,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 10:28:55,445 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:28:55,445 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] [2023-02-15 10:28:55,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-15 10:28:55,445 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:28:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:28:55,446 INFO L85 PathProgramCache]: Analyzing trace with hash 852143331, now seen corresponding path program 1 times [2023-02-15 10:28:55,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:28:55,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262346168] [2023-02-15 10:28:55,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:28:55,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:28:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:55,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-15 10:28:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:55,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:28:55,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:28:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:28:55,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:28:55,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262346168] [2023-02-15 10:28:55,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262346168] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:28:55,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:28:55,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:28:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071522175] [2023-02-15 10:28:55,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:28:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:28:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:28:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:28:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:28:55,709 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) [2023-02-15 10:28:59,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:29:03,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:29:07,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:07,739 INFO L93 Difference]: Finished difference Result 7069 states and 10652 transitions. [2023-02-15 10:29:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:29:07,739 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 [2023-02-15 10:29:07,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:07,760 INFO L225 Difference]: With dead ends: 7069 [2023-02-15 10:29:07,760 INFO L226 Difference]: Without dead ends: 7029 [2023-02-15 10:29:07,764 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 [2023-02-15 10:29:07,766 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 1149 mSDsluCounter, 5446 mSDsCounter, 0 mSdLazyCounter, 6986 mSolverCounterSat, 359 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 6951 SdHoareTripleChecker+Invalid, 7346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 6986 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:07,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1449 Valid, 6951 Invalid, 7346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [359 Valid, 6986 Invalid, 1 Unknown, 0 Unchecked, 11.6s Time] [2023-02-15 10:29:07,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7029 states. [2023-02-15 10:29:08,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7029 to 6192. [2023-02-15 10:29:08,056 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) [2023-02-15 10:29:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6192 states to 6192 states and 9239 transitions. [2023-02-15 10:29:08,078 INFO L78 Accepts]: Start accepts. Automaton has 6192 states and 9239 transitions. Word has length 50 [2023-02-15 10:29:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:08,078 INFO L495 AbstractCegarLoop]: Abstraction has 6192 states and 9239 transitions. [2023-02-15 10:29:08,078 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) [2023-02-15 10:29:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6192 states and 9239 transitions. [2023-02-15 10:29:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 10:29:08,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:08,080 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] [2023-02-15 10:29:08,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-15 10:29:08,080 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:08,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:08,080 INFO L85 PathProgramCache]: Analyzing trace with hash 900358753, now seen corresponding path program 1 times [2023-02-15 10:29:08,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:08,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631292386] [2023-02-15 10:29:08,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:08,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:08,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631292386] [2023-02-15 10:29:08,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631292386] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:08,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:08,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:29:08,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421571695] [2023-02-15 10:29:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:08,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:29:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:08,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:29:08,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:29:08,294 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) [2023-02-15 10:29:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:08,634 INFO L93 Difference]: Finished difference Result 6284 states and 9363 transitions. [2023-02-15 10:29:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:29:08,635 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 [2023-02-15 10:29:08,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:08,653 INFO L225 Difference]: With dead ends: 6284 [2023-02-15 10:29:08,653 INFO L226 Difference]: Without dead ends: 6253 [2023-02-15 10:29:08,657 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 [2023-02-15 10:29:08,658 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 [2023-02-15 10:29:08,658 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] [2023-02-15 10:29:08,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6253 states. [2023-02-15 10:29:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6253 to 6195. [2023-02-15 10:29:08,929 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) [2023-02-15 10:29:08,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6195 states to 6195 states and 9242 transitions. [2023-02-15 10:29:08,947 INFO L78 Accepts]: Start accepts. Automaton has 6195 states and 9242 transitions. Word has length 45 [2023-02-15 10:29:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:08,948 INFO L495 AbstractCegarLoop]: Abstraction has 6195 states and 9242 transitions. [2023-02-15 10:29:08,948 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) [2023-02-15 10:29:08,948 INFO L276 IsEmpty]: Start isEmpty. Operand 6195 states and 9242 transitions. [2023-02-15 10:29:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-15 10:29:08,949 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:08,949 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] [2023-02-15 10:29:08,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-15 10:29:08,949 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:08,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:08,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1606233439, now seen corresponding path program 1 times [2023-02-15 10:29:08,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:08,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742538861] [2023-02-15 10:29:08,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:08,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:09,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742538861] [2023-02-15 10:29:09,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742538861] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:09,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:09,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:29:09,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340152514] [2023-02-15 10:29:09,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:09,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:29:09,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:09,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:29:09,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:29:09,148 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) [2023-02-15 10:29:09,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:09,549 INFO L93 Difference]: Finished difference Result 6280 states and 9356 transitions. [2023-02-15 10:29:09,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:29:09,550 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 [2023-02-15 10:29:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:09,563 INFO L225 Difference]: With dead ends: 6280 [2023-02-15 10:29:09,564 INFO L226 Difference]: Without dead ends: 6249 [2023-02-15 10:29:09,566 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 [2023-02-15 10:29:09,567 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 [2023-02-15 10:29:09,567 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] [2023-02-15 10:29:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2023-02-15 10:29:09,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 6188. [2023-02-15 10:29:09,902 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) [2023-02-15 10:29:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6188 states to 6188 states and 9232 transitions. [2023-02-15 10:29:09,920 INFO L78 Accepts]: Start accepts. Automaton has 6188 states and 9232 transitions. Word has length 45 [2023-02-15 10:29:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:09,921 INFO L495 AbstractCegarLoop]: Abstraction has 6188 states and 9232 transitions. [2023-02-15 10:29:09,921 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) [2023-02-15 10:29:09,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6188 states and 9232 transitions. [2023-02-15 10:29:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-15 10:29:09,923 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:09,923 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] [2023-02-15 10:29:09,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-15 10:29:09,923 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash 752543076, now seen corresponding path program 1 times [2023-02-15 10:29:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:09,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110837725] [2023-02-15 10:29:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:10,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 10:29:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:10,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:29:10,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:10,160 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:10,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110837725] [2023-02-15 10:29:10,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110837725] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:10,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:10,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:29:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199673689] [2023-02-15 10:29:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:10,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:29:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:29:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:29:10,163 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) [2023-02-15 10:29:15,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:15,295 INFO L93 Difference]: Finished difference Result 7047 states and 10622 transitions. [2023-02-15 10:29:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:29:15,295 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 [2023-02-15 10:29:15,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:15,315 INFO L225 Difference]: With dead ends: 7047 [2023-02-15 10:29:15,316 INFO L226 Difference]: Without dead ends: 7017 [2023-02-15 10:29:15,320 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 [2023-02-15 10:29:15,321 INFO L413 NwaCegarLoop]: 1210 mSDtfsCounter, 1754 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 6639 mSolverCounterSat, 996 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.8s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:15,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2064 Valid, 5338 Invalid, 7635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [996 Valid, 6639 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-15 10:29:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7017 states. [2023-02-15 10:29:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7017 to 6185. [2023-02-15 10:29:15,595 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) [2023-02-15 10:29:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6185 states to 6185 states and 9227 transitions. [2023-02-15 10:29:15,655 INFO L78 Accepts]: Start accepts. Automaton has 6185 states and 9227 transitions. Word has length 53 [2023-02-15 10:29:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:15,656 INFO L495 AbstractCegarLoop]: Abstraction has 6185 states and 9227 transitions. [2023-02-15 10:29:15,656 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) [2023-02-15 10:29:15,656 INFO L276 IsEmpty]: Start isEmpty. Operand 6185 states and 9227 transitions. [2023-02-15 10:29:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-02-15 10:29:15,657 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:15,657 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] [2023-02-15 10:29:15,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-15 10:29:15,658 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:15,658 INFO L85 PathProgramCache]: Analyzing trace with hash -491344575, now seen corresponding path program 1 times [2023-02-15 10:29:15,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:15,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818907597] [2023-02-15 10:29:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:15,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-15 10:29:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:15,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-15 10:29:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:15,904 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:15,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:15,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818907597] [2023-02-15 10:29:15,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818907597] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:15,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:15,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:29:15,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340328856] [2023-02-15 10:29:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:15,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:29:15,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:15,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:29:15,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:29:15,908 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) [2023-02-15 10:29:20,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:20,607 INFO L93 Difference]: Finished difference Result 7044 states and 10617 transitions. [2023-02-15 10:29:20,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:29:20,608 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 [2023-02-15 10:29:20,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:20,624 INFO L225 Difference]: With dead ends: 7044 [2023-02-15 10:29:20,624 INFO L226 Difference]: Without dead ends: 7008 [2023-02-15 10:29:20,627 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 [2023-02-15 10:29:20,627 INFO L413 NwaCegarLoop]: 1177 mSDtfsCounter, 1766 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 6563 mSolverCounterSat, 1008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s 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, 4.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:20,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 5209 Invalid, 7571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1008 Valid, 6563 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-02-15 10:29:20,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2023-02-15 10:29:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 6176. [2023-02-15 10:29:20,896 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) [2023-02-15 10:29:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 9215 transitions. [2023-02-15 10:29:20,914 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 9215 transitions. Word has length 50 [2023-02-15 10:29:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:20,914 INFO L495 AbstractCegarLoop]: Abstraction has 6176 states and 9215 transitions. [2023-02-15 10:29:20,914 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) [2023-02-15 10:29:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 9215 transitions. [2023-02-15 10:29:20,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-15 10:29:20,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:20,916 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] [2023-02-15 10:29:20,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-15 10:29:20,916 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2048298195, now seen corresponding path program 1 times [2023-02-15 10:29:20,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393983585] [2023-02-15 10:29:20,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:20,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:21,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-15 10:29:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:29:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 10:29:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:21,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:29:21,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:21,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:21,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:21,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393983585] [2023-02-15 10:29:21,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393983585] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:21,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:21,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 10:29:21,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196223914] [2023-02-15 10:29:21,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:21,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 10:29:21,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 10:29:21,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 10:29:21,200 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) [2023-02-15 10:29:26,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:26,392 INFO L93 Difference]: Finished difference Result 11648 states and 17459 transitions. [2023-02-15 10:29:26,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:29:26,394 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 [2023-02-15 10:29:26,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:26,416 INFO L225 Difference]: With dead ends: 11648 [2023-02-15 10:29:26,416 INFO L226 Difference]: Without dead ends: 6880 [2023-02-15 10:29:26,432 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 [2023-02-15 10:29:26,433 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 1758 mSDsluCounter, 5141 mSDsCounter, 0 mSdLazyCounter, 8161 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.8s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:26,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2068 Valid, 6338 Invalid, 9147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 8161 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-15 10:29:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6880 states. [2023-02-15 10:29:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6880 to 6022. [2023-02-15 10:29:26,736 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) [2023-02-15 10:29:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8969 transitions. [2023-02-15 10:29:26,752 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8969 transitions. Word has length 58 [2023-02-15 10:29:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:26,752 INFO L495 AbstractCegarLoop]: Abstraction has 6022 states and 8969 transitions. [2023-02-15 10:29:26,752 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) [2023-02-15 10:29:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8969 transitions. [2023-02-15 10:29:26,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 10:29:26,754 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:26,754 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] [2023-02-15 10:29:26,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-15 10:29:26,754 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:26,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1591264843, now seen corresponding path program 1 times [2023-02-15 10:29:26,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:26,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909755806] [2023-02-15 10:29:26,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:26,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:26,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 10:29:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:29:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:26,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:26,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:26,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909755806] [2023-02-15 10:29:26,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909755806] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:26,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:26,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 10:29:26,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932797223] [2023-02-15 10:29:26,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:26,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 10:29:26,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:26,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 10:29:26,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 10:29:26,990 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) [2023-02-15 10:29:30,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:29:34,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:29:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:37,594 INFO L93 Difference]: Finished difference Result 7026 states and 10550 transitions. [2023-02-15 10:29:37,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 10:29:37,595 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 [2023-02-15 10:29:37,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:37,618 INFO L225 Difference]: With dead ends: 7026 [2023-02-15 10:29:37,618 INFO L226 Difference]: Without dead ends: 6932 [2023-02-15 10:29:37,622 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 [2023-02-15 10:29:37,623 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 921 mSDsluCounter, 5698 mSDsCounter, 0 mSdLazyCounter, 7091 mSolverCounterSat, 374 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s 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, 10.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:37,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 7217 Invalid, 7466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 7091 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2023-02-15 10:29:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6932 states. [2023-02-15 10:29:37,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6932 to 6024. [2023-02-15 10:29:37,936 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) [2023-02-15 10:29:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6024 states to 6024 states and 8970 transitions. [2023-02-15 10:29:37,953 INFO L78 Accepts]: Start accepts. Automaton has 6024 states and 8970 transitions. Word has length 54 [2023-02-15 10:29:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:37,954 INFO L495 AbstractCegarLoop]: Abstraction has 6024 states and 8970 transitions. [2023-02-15 10:29:37,954 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) [2023-02-15 10:29:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 6024 states and 8970 transitions. [2023-02-15 10:29:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 10:29:37,956 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:37,956 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] [2023-02-15 10:29:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-15 10:29:37,956 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1790097882, now seen corresponding path program 1 times [2023-02-15 10:29:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:37,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942611195] [2023-02-15 10:29:37,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:37,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:38,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 10:29:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:38,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:29:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:38,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:38,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942611195] [2023-02-15 10:29:38,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942611195] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:38,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:38,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:29:38,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012573877] [2023-02-15 10:29:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:29:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:29:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:29:38,322 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) [2023-02-15 10:29:44,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:44,121 INFO L93 Difference]: Finished difference Result 6883 states and 10358 transitions. [2023-02-15 10:29:44,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:29:44,122 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 [2023-02-15 10:29:44,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:44,144 INFO L225 Difference]: With dead ends: 6883 [2023-02-15 10:29:44,144 INFO L226 Difference]: Without dead ends: 6853 [2023-02-15 10:29:44,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-15 10:29:44,148 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 1786 mSDsluCounter, 6033 mSDsCounter, 0 mSdLazyCounter, 9569 mSolverCounterSat, 1002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s 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, 5.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:44,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 7189 Invalid, 10571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1002 Valid, 9569 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-02-15 10:29:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6853 states. [2023-02-15 10:29:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6853 to 6022. [2023-02-15 10:29:44,439 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) [2023-02-15 10:29:44,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6022 states to 6022 states and 8966 transitions. [2023-02-15 10:29:44,455 INFO L78 Accepts]: Start accepts. Automaton has 6022 states and 8966 transitions. Word has length 55 [2023-02-15 10:29:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:44,455 INFO L495 AbstractCegarLoop]: Abstraction has 6022 states and 8966 transitions. [2023-02-15 10:29:44,456 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) [2023-02-15 10:29:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 6022 states and 8966 transitions. [2023-02-15 10:29:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 10:29:44,471 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:44,471 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] [2023-02-15 10:29:44,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-15 10:29:44,471 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:44,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:44,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1976910524, now seen corresponding path program 1 times [2023-02-15 10:29:44,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:44,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348783095] [2023-02-15 10:29:44,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:44,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-15 10:29:44,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:44,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:29:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-15 10:29:44,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:44,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:44,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:44,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348783095] [2023-02-15 10:29:44,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348783095] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:44,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:44,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 10:29:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684186556] [2023-02-15 10:29:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:44,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 10:29:44,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:44,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 10:29:44,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-02-15 10:29:44,728 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) [2023-02-15 10:29:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:49,483 INFO L93 Difference]: Finished difference Result 6167 states and 9161 transitions. [2023-02-15 10:29:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 10:29:49,484 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 [2023-02-15 10:29:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:49,499 INFO L225 Difference]: With dead ends: 6167 [2023-02-15 10:29:49,500 INFO L226 Difference]: Without dead ends: 6126 [2023-02-15 10:29:49,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-02-15 10:29:49,503 INFO L413 NwaCegarLoop]: 1256 mSDtfsCounter, 1126 mSDsluCounter, 6527 mSDsCounter, 0 mSdLazyCounter, 8452 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.4s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:49,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1418 Valid, 7783 Invalid, 8625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 8452 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-02-15 10:29:49,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6126 states. [2023-02-15 10:29:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6126 to 6027. [2023-02-15 10:29:49,771 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) [2023-02-15 10:29:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6027 states to 6027 states and 8971 transitions. [2023-02-15 10:29:49,788 INFO L78 Accepts]: Start accepts. Automaton has 6027 states and 8971 transitions. Word has length 56 [2023-02-15 10:29:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:49,789 INFO L495 AbstractCegarLoop]: Abstraction has 6027 states and 8971 transitions. [2023-02-15 10:29:49,789 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) [2023-02-15 10:29:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 6027 states and 8971 transitions. [2023-02-15 10:29:49,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 10:29:49,791 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:49,791 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] [2023-02-15 10:29:49,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-02-15 10:29:49,792 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:49,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1624955075, now seen corresponding path program 1 times [2023-02-15 10:29:49,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:49,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584838350] [2023-02-15 10:29:49,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:49,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-02-15 10:29:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:29:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:50,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-15 10:29:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:50,077 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:50,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584838350] [2023-02-15 10:29:50,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584838350] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:50,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:50,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:29:50,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230599715] [2023-02-15 10:29:50,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:50,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:29:50,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:50,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:29:50,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:29:50,079 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) [2023-02-15 10:29:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:29:53,995 INFO L93 Difference]: Finished difference Result 6055 states and 9005 transitions. [2023-02-15 10:29:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 10:29:53,996 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 [2023-02-15 10:29:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:29:54,019 INFO L225 Difference]: With dead ends: 6055 [2023-02-15 10:29:54,020 INFO L226 Difference]: Without dead ends: 6025 [2023-02-15 10:29:54,024 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 [2023-02-15 10:29:54,024 INFO L413 NwaCegarLoop]: 1235 mSDtfsCounter, 1116 mSDsluCounter, 4153 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:29:54,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 5388 Invalid, 5801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-02-15 10:29:54,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6025 states. [2023-02-15 10:29:54,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6025 to 6020. [2023-02-15 10:29:54,307 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) [2023-02-15 10:29:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6020 states to 6020 states and 8962 transitions. [2023-02-15 10:29:54,322 INFO L78 Accepts]: Start accepts. Automaton has 6020 states and 8962 transitions. Word has length 56 [2023-02-15 10:29:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:29:54,323 INFO L495 AbstractCegarLoop]: Abstraction has 6020 states and 8962 transitions. [2023-02-15 10:29:54,323 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) [2023-02-15 10:29:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 6020 states and 8962 transitions. [2023-02-15 10:29:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-15 10:29:54,325 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:29:54,325 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] [2023-02-15 10:29:54,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-02-15 10:29:54,325 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:29:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:29:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1854765641, now seen corresponding path program 1 times [2023-02-15 10:29:54,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:29:54,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15509750] [2023-02-15 10:29:54,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:29:54,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:29:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-15 10:29:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:29:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:29:54,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:29:54,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15509750] [2023-02-15 10:29:54,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15509750] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:29:54,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:29:54,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 10:29:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304125196] [2023-02-15 10:29:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:29:54,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 10:29:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:29:54,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 10:29:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:29:54,636 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) [2023-02-15 10:29:56,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:29:59,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:30:01,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:30:08,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:30:10,784 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 [] [2023-02-15 10:30:15,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:30:15,216 INFO L93 Difference]: Finished difference Result 6780 states and 10130 transitions. [2023-02-15 10:30:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 10:30:15,216 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 [2023-02-15 10:30:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:30:15,269 INFO L225 Difference]: With dead ends: 6780 [2023-02-15 10:30:15,271 INFO L226 Difference]: Without dead ends: 6693 [2023-02-15 10:30:15,273 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 [2023-02-15 10:30:15,274 INFO L413 NwaCegarLoop]: 1203 mSDtfsCounter, 3034 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 9669 mSolverCounterSat, 1514 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 5945 SdHoareTripleChecker+Invalid, 11187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1514 IncrementalHoareTripleChecker+Valid, 9669 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2023-02-15 10:30:15,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 5945 Invalid, 11187 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1514 Valid, 9669 Invalid, 4 Unknown, 0 Unchecked, 20.0s Time] [2023-02-15 10:30:15,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2023-02-15 10:30:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 6066. [2023-02-15 10:30:15,616 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) [2023-02-15 10:30:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6066 states to 6066 states and 9017 transitions. [2023-02-15 10:30:15,633 INFO L78 Accepts]: Start accepts. Automaton has 6066 states and 9017 transitions. Word has length 55 [2023-02-15 10:30:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:30:15,633 INFO L495 AbstractCegarLoop]: Abstraction has 6066 states and 9017 transitions. [2023-02-15 10:30:15,633 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) [2023-02-15 10:30:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 6066 states and 9017 transitions. [2023-02-15 10:30:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 10:30:15,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:30:15,635 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] [2023-02-15 10:30:15,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-02-15 10:30:15,636 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:30:15,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:30:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1116807328, now seen corresponding path program 1 times [2023-02-15 10:30:15,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:30:15,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369337856] [2023-02-15 10:30:15,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:30:15,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:30:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 10:30:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:30:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:15,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 10:30:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:30:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-02-15 10:30:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:15,951 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:30:15,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:30:15,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369337856] [2023-02-15 10:30:15,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369337856] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:30:15,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:30:15,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-15 10:30:15,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978780180] [2023-02-15 10:30:15,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:30:15,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 10:30:15,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:30:15,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 10:30:15,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-15 10:30:15,954 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) [2023-02-15 10:30:19,164 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 [] [2023-02-15 10:30:24,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:30:24,588 INFO L93 Difference]: Finished difference Result 6933 states and 10354 transitions. [2023-02-15 10:30:24,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 10:30:24,589 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 [2023-02-15 10:30:24,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:30:24,605 INFO L225 Difference]: With dead ends: 6933 [2023-02-15 10:30:24,606 INFO L226 Difference]: Without dead ends: 5990 [2023-02-15 10:30:24,633 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 [2023-02-15 10:30:24,634 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 1771 mSDsluCounter, 5067 mSDsCounter, 0 mSdLazyCounter, 8181 mSolverCounterSat, 1018 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s 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, 8.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:30:24,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2088 Valid, 6258 Invalid, 9200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1018 Valid, 8181 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2023-02-15 10:30:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2023-02-15 10:30:24,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5243. [2023-02-15 10:30:24,958 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) [2023-02-15 10:30:24,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5243 states to 5243 states and 7773 transitions. [2023-02-15 10:30:24,971 INFO L78 Accepts]: Start accepts. Automaton has 5243 states and 7773 transitions. Word has length 69 [2023-02-15 10:30:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:30:24,972 INFO L495 AbstractCegarLoop]: Abstraction has 5243 states and 7773 transitions. [2023-02-15 10:30:24,972 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) [2023-02-15 10:30:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5243 states and 7773 transitions. [2023-02-15 10:30:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-02-15 10:30:24,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:30:24,974 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] [2023-02-15 10:30:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-02-15 10:30:24,975 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:30:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:30:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -599882155, now seen corresponding path program 1 times [2023-02-15 10:30:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:30:24,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574699333] [2023-02-15 10:30:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:30:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:30:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 10:30:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:30:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 10:30:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:30:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-02-15 10:30:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-02-15 10:30:25,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:30:25,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:30:25,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574699333] [2023-02-15 10:30:25,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574699333] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:30:25,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:30:25,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:30:25,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582969546] [2023-02-15 10:30:25,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:30:25,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:30:25,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:30:25,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:30:25,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:30:25,267 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) [2023-02-15 10:30:29,071 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 [] [2023-02-15 10:30:36,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:30:36,916 INFO L93 Difference]: Finished difference Result 6024 states and 9008 transitions. [2023-02-15 10:30:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:30:36,917 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 [2023-02-15 10:30:36,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:30:36,932 INFO L225 Difference]: With dead ends: 6024 [2023-02-15 10:30:36,932 INFO L226 Difference]: Without dead ends: 5971 [2023-02-15 10:30:36,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 10:30:36,935 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, 11.2s IncrementalHoareTripleChecker+Time [2023-02-15 10:30:36,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2691 Valid, 6890 Invalid, 10282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1683 Valid, 8598 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2023-02-15 10:30:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2023-02-15 10:30:37,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5230. [2023-02-15 10:30:37,254 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) [2023-02-15 10:30:37,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5230 states to 5230 states and 7757 transitions. [2023-02-15 10:30:37,268 INFO L78 Accepts]: Start accepts. Automaton has 5230 states and 7757 transitions. Word has length 63 [2023-02-15 10:30:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:30:37,268 INFO L495 AbstractCegarLoop]: Abstraction has 5230 states and 7757 transitions. [2023-02-15 10:30:37,268 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) [2023-02-15 10:30:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5230 states and 7757 transitions. [2023-02-15 10:30:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-15 10:30:37,269 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:30:37,270 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] [2023-02-15 10:30:37,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-02-15 10:30:37,270 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:30:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:30:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 878874236, now seen corresponding path program 1 times [2023-02-15 10:30:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:30:37,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144665334] [2023-02-15 10:30:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:30:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:30:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-15 10:30:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:37,519 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:30:37,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:30:37,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144665334] [2023-02-15 10:30:37,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144665334] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:30:37,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:30:37,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 10:30:37,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484658390] [2023-02-15 10:30:37,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:30:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 10:30:37,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:30:37,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 10:30:37,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 10:30:37,521 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) [2023-02-15 10:30:40,987 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 [] [2023-02-15 10:30:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:30:46,766 INFO L93 Difference]: Finished difference Result 8066 states and 12047 transitions. [2023-02-15 10:30:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 10:30:46,766 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 [2023-02-15 10:30:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:30:46,781 INFO L225 Difference]: With dead ends: 8066 [2023-02-15 10:30:46,781 INFO L226 Difference]: Without dead ends: 5711 [2023-02-15 10:30:46,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-02-15 10:30:46,790 INFO L413 NwaCegarLoop]: 1557 mSDtfsCounter, 2667 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 4415 mSolverCounterSat, 1134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 4641 SdHoareTripleChecker+Invalid, 5550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 4415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-02-15 10:30:46,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 4641 Invalid, 5550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1134 Valid, 4415 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2023-02-15 10:30:46,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5711 states. [2023-02-15 10:30:47,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5711 to 5187. [2023-02-15 10:30:47,152 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) [2023-02-15 10:30:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5187 states to 5187 states and 7700 transitions. [2023-02-15 10:30:47,175 INFO L78 Accepts]: Start accepts. Automaton has 5187 states and 7700 transitions. Word has length 57 [2023-02-15 10:30:47,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:30:47,175 INFO L495 AbstractCegarLoop]: Abstraction has 5187 states and 7700 transitions. [2023-02-15 10:30:47,175 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) [2023-02-15 10:30:47,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5187 states and 7700 transitions. [2023-02-15 10:30:47,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-15 10:30:47,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:30:47,188 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] [2023-02-15 10:30:47,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-02-15 10:30:47,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:30:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:30:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash -566194308, now seen corresponding path program 1 times [2023-02-15 10:30:47,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:30:47,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183601393] [2023-02-15 10:30:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:30:47,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:30:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-15 10:30:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:30:47,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:30:47,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:30:47,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183601393] [2023-02-15 10:30:47,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183601393] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:30:47,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:30:47,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 10:30:47,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353259663] [2023-02-15 10:30:47,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:30:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 10:30:47,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:30:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 10:30:47,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 10:30:47,419 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) [2023-02-15 10:30:51,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:30:55,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:30:57,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:31:03,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:31:03,267 INFO L93 Difference]: Finished difference Result 6961 states and 10425 transitions. [2023-02-15 10:31:03,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 10:31:03,267 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 57 [2023-02-15 10:31:03,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:31:03,286 INFO L225 Difference]: With dead ends: 6961 [2023-02-15 10:31:03,286 INFO L226 Difference]: Without dead ends: 6948 [2023-02-15 10:31:03,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 10:31:03,290 INFO L413 NwaCegarLoop]: 2260 mSDtfsCounter, 2031 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 4588 mSolverCounterSat, 965 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 5555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 4588 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-02-15 10:31:03,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2350 Valid, 4417 Invalid, 5555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [965 Valid, 4588 Invalid, 2 Unknown, 0 Unchecked, 15.3s Time] [2023-02-15 10:31:03,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6948 states. [2023-02-15 10:31:03,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 5221. [2023-02-15 10:31:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5221 states, 3562 states have (on average 1.375350926445817) internal successors, (4899), 3662 states have internal predecessors, (4899), 1417 states have call successors, (1417), 236 states have call predecessors, (1417), 241 states have return successors, (1422), 1382 states have call predecessors, (1422), 1407 states have call successors, (1422) [2023-02-15 10:31:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 7738 transitions. [2023-02-15 10:31:03,655 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 7738 transitions. Word has length 57 [2023-02-15 10:31:03,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:31:03,656 INFO L495 AbstractCegarLoop]: Abstraction has 5221 states and 7738 transitions. [2023-02-15 10:31:03,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-02-15 10:31:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 7738 transitions. [2023-02-15 10:31:03,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-15 10:31:03,658 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:31:03,658 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 10:31:03,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-02-15 10:31:03,658 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:31:03,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:31:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1294086456, now seen corresponding path program 1 times [2023-02-15 10:31:03,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:31:03,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281695874] [2023-02-15 10:31:03,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:31:03,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:31:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:03,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-02-15 10:31:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:03,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:31:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 10:31:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:03,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:31:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:04,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:31:04,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:31:04,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281695874] [2023-02-15 10:31:04,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281695874] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:31:04,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:31:04,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 10:31:04,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619328500] [2023-02-15 10:31:04,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:31:04,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 10:31:04,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:31:04,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 10:31:04,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:31:04,003 INFO L87 Difference]: Start difference. First operand 5221 states and 7738 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 10:31:08,348 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 [] [2023-02-15 10:31:10,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:31:16,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:31:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:31:21,279 INFO L93 Difference]: Finished difference Result 5946 states and 8907 transitions. [2023-02-15 10:31:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:31:21,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2023-02-15 10:31:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:31:21,292 INFO L225 Difference]: With dead ends: 5946 [2023-02-15 10:31:21,292 INFO L226 Difference]: Without dead ends: 5900 [2023-02-15 10:31:21,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:31:21,295 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 1162 mSDsluCounter, 7725 mSDsCounter, 0 mSdLazyCounter, 11752 mSolverCounterSat, 407 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 8917 SdHoareTripleChecker+Invalid, 12161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 11752 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-02-15 10:31:21,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 8917 Invalid, 12161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [407 Valid, 11752 Invalid, 2 Unknown, 0 Unchecked, 16.7s Time] [2023-02-15 10:31:21,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5900 states. [2023-02-15 10:31:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5900 to 5214. [2023-02-15 10:31:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 3556 states have (on average 1.3700787401574803) internal successors, (4872), 3656 states have internal predecessors, (4872), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1420), 1380 states have call predecessors, (1420), 1406 states have call successors, (1420) [2023-02-15 10:31:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 7708 transitions. [2023-02-15 10:31:21,639 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 7708 transitions. Word has length 69 [2023-02-15 10:31:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:31:21,640 INFO L495 AbstractCegarLoop]: Abstraction has 5214 states and 7708 transitions. [2023-02-15 10:31:21,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 10:31:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 7708 transitions. [2023-02-15 10:31:21,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-02-15 10:31:21,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:31:21,642 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, 1, 1, 1] [2023-02-15 10:31:21,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-02-15 10:31:21,642 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:31:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:31:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 60334842, now seen corresponding path program 1 times [2023-02-15 10:31:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:31:21,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233092268] [2023-02-15 10:31:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:31:21,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:31:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:21,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-02-15 10:31:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:31:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 10:31:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-02-15 10:31:21,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:31:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:31:21,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233092268] [2023-02-15 10:31:21,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233092268] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:31:21,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:31:21,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-15 10:31:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964012088] [2023-02-15 10:31:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:31:21,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 10:31:21,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:31:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 10:31:21,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-02-15 10:31:21,930 INFO L87 Difference]: Start difference. First operand 5214 states and 7708 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 10:31:25,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:31:31,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-15 10:31:36,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 10:31:36,086 INFO L93 Difference]: Finished difference Result 5928 states and 8860 transitions. [2023-02-15 10:31:36,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 10:31:36,086 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2023-02-15 10:31:36,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 10:31:36,101 INFO L225 Difference]: With dead ends: 5928 [2023-02-15 10:31:36,102 INFO L226 Difference]: Without dead ends: 5898 [2023-02-15 10:31:36,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-15 10:31:36,104 INFO L413 NwaCegarLoop]: 1162 mSDtfsCounter, 1153 mSDsluCounter, 7580 mSDsCounter, 0 mSdLazyCounter, 11632 mSolverCounterSat, 377 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 8742 SdHoareTripleChecker+Invalid, 12010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 11632 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-02-15 10:31:36,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 8742 Invalid, 12010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [377 Valid, 11632 Invalid, 1 Unknown, 0 Unchecked, 13.6s Time] [2023-02-15 10:31:36,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5898 states. [2023-02-15 10:31:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5898 to 5212. [2023-02-15 10:31:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5212 states, 3554 states have (on average 1.370287000562746) internal successors, (4870), 3655 states have internal predecessors, (4870), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1419), 1379 states have call predecessors, (1419), 1406 states have call successors, (1419) [2023-02-15 10:31:36,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5212 states to 5212 states and 7705 transitions. [2023-02-15 10:31:36,445 INFO L78 Accepts]: Start accepts. Automaton has 5212 states and 7705 transitions. Word has length 61 [2023-02-15 10:31:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 10:31:36,445 INFO L495 AbstractCegarLoop]: Abstraction has 5212 states and 7705 transitions. [2023-02-15 10:31:36,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 10:31:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5212 states and 7705 transitions. [2023-02-15 10:31:36,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-02-15 10:31:36,447 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 10:31:36,448 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] [2023-02-15 10:31:36,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-02-15 10:31:36,448 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 10:31:36,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 10:31:36,448 INFO L85 PathProgramCache]: Analyzing trace with hash 80650238, now seen corresponding path program 1 times [2023-02-15 10:31:36,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 10:31:36,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421799260] [2023-02-15 10:31:36,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 10:31:36,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 10:31:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:36,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-15 10:31:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 10:31:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 10:31:36,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 10:31:36,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421799260] [2023-02-15 10:31:36,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421799260] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 10:31:36,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 10:31:36,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-15 10:31:36,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190983250] [2023-02-15 10:31:36,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 10:31:36,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 10:31:36,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 10:31:36,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 10:31:36,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-02-15 10:31:36,744 INFO L87 Difference]: Start difference. First operand 5212 states and 7705 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 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)