/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 04:09:59,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 04:09:59,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 04:09:59,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 04:09:59,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 04:09:59,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 04:09:59,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 04:09:59,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 04:09:59,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 04:09:59,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 04:09:59,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 04:09:59,940 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 04:09:59,940 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 04:09:59,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 04:09:59,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 04:09:59,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 04:09:59,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 04:09:59,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 04:09:59,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 04:09:59,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 04:09:59,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 04:09:59,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 04:09:59,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 04:09:59,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 04:09:59,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 04:09:59,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 04:09:59,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 04:09:59,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 04:09:59,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 04:09:59,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 04:09:59,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 04:09:59,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 04:09:59,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 04:09:59,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 04:09:59,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 04:09:59,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 04:09:59,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 04:09:59,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 04:09:59,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 04:09:59,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 04:09:59,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 04:09:59,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 04:09:59,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 04:09:59,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 04:09:59,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 04:09:59,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 04:09:59,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 04:09:59,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 04:09:59,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 04:09:59,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 04:09:59,977 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 04:09:59,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 04:09:59,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 04:09:59,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 04:09:59,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 04:09:59,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 04:09:59,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 04:09:59,978 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 04:09:59,978 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 04:09:59,978 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 04:09:59,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 04:09:59,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 04:09:59,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 04:09:59,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 04:09:59,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 04:09:59,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:09:59,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 04:09:59,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 04:09:59,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 04:09:59,979 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 04:09:59,980 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 04:09:59,980 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 04:09:59,980 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 04:09:59,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 04:09:59,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 04:09:59,980 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 04:10:00,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 04:10:00,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 04:10:00,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 04:10:00,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 04:10:00,179 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 04:10:00,180 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-01-10 04:10:00,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c150cc4f7/72d88768fd544b56a80a0200a6e4ace0/FLAG4ab4dbeb1 [2022-01-10 04:10:00,624 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 04:10:00,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2022-01-10 04:10:00,637 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c150cc4f7/72d88768fd544b56a80a0200a6e4ace0/FLAG4ab4dbeb1 [2022-01-10 04:10:00,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c150cc4f7/72d88768fd544b56a80a0200a6e4ace0 [2022-01-10 04:10:00,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 04:10:00,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 04:10:00,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 04:10:00,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 04:10:00,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 04:10:00,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:00,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e8c983 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00, skipping insertion in model container [2022-01-10 04:10:00,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:00,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 04:10:00,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 04:10:00,871 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2022-01-10 04:10:00,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:10:00,888 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 04:10:00,933 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2022-01-10 04:10:00,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 04:10:00,947 INFO L208 MainTranslator]: Completed translation [2022-01-10 04:10:00,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00 WrapperNode [2022-01-10 04:10:00,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 04:10:00,948 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 04:10:00,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 04:10:00,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 04:10:00,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:00,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,002 INFO L137 Inliner]: procedures = 29, calls = 44, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 607 [2022-01-10 04:10:01,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 04:10:01,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 04:10:01,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 04:10:01,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 04:10:01,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,036 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 04:10:01,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 04:10:01,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 04:10:01,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 04:10:01,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (1/1) ... [2022-01-10 04:10:01,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 04:10:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 04:10:01,079 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) [2022-01-10 04:10:01,081 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 [2022-01-10 04:10:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 04:10:01,106 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-01-10 04:10:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-01-10 04:10:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 04:10:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-01-10 04:10:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-01-10 04:10:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-01-10 04:10:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-01-10 04:10:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-01-10 04:10:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-01-10 04:10:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-01-10 04:10:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-01-10 04:10:01,107 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-01-10 04:10:01,107 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-01-10 04:10:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 04:10:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 04:10:01,108 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-01-10 04:10:01,108 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-01-10 04:10:01,210 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 04:10:01,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 04:10:01,319 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:10:01,322 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:10:01,328 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:10:01,330 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:10:01,331 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:10:01,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume !false; [2022-01-10 04:10:01,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume false; [2022-01-10 04:10:01,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##63: assume !false; [2022-01-10 04:10:01,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##62: assume false; [2022-01-10 04:10:01,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##129: assume false; [2022-01-10 04:10:01,561 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume !false; [2022-01-10 04:10:01,562 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2022-01-10 04:10:01,562 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2022-01-10 04:10:01,562 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume !false; [2022-01-10 04:10:01,562 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume false; [2022-01-10 04:10:01,582 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-01-10 04:10:01,598 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-01-10 04:10:01,599 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-01-10 04:10:01,604 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 04:10:01,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 04:10:01,613 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 04:10:01,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:10:01 BoogieIcfgContainer [2022-01-10 04:10:01,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 04:10:01,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 04:10:01,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 04:10:01,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 04:10:01,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 04:10:00" (1/3) ... [2022-01-10 04:10:01,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c628d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:10:01, skipping insertion in model container [2022-01-10 04:10:01,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 04:10:00" (2/3) ... [2022-01-10 04:10:01,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72c628d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 04:10:01, skipping insertion in model container [2022-01-10 04:10:01,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 04:10:01" (3/3) ... [2022-01-10 04:10:01,624 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2022-01-10 04:10:01,627 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 04:10:01,627 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 04:10:01,661 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 04:10:01,665 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 04:10:01,665 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 04:10:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 171 states have (on average 1.5964912280701755) internal successors, (273), 189 states have internal predecessors, (273), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 04:10:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-01-10 04:10:01,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:01,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:01,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:01,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:01,686 INFO L85 PathProgramCache]: Analyzing trace with hash -809123759, now seen corresponding path program 1 times [2022-01-10 04:10:01,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:01,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886761442] [2022-01-10 04:10:01,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:01,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:01,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:01,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:01,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 04:10:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:01,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:01,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:01,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:01,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886761442] [2022-01-10 04:10:01,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886761442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:01,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:01,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:01,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406423157] [2022-01-10 04:10:01,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:01,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:01,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:01,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:01,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:01,904 INFO L87 Difference]: Start difference. First operand has 209 states, 171 states have (on average 1.5964912280701755) internal successors, (273), 189 states have internal predecessors, (273), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-01-10 04:10:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:01,994 INFO L93 Difference]: Finished difference Result 340 states and 533 transitions. [2022-01-10 04:10:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:02,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2022-01-10 04:10:02,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:02,008 INFO L225 Difference]: With dead ends: 340 [2022-01-10 04:10:02,008 INFO L226 Difference]: Without dead ends: 201 [2022-01-10 04:10:02,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:02,015 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 178 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:02,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 417 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:02,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-10 04:10:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2022-01-10 04:10:02,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 165 states have (on average 1.5272727272727273) internal successors, (252), 181 states have internal predecessors, (252), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-01-10 04:10:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 296 transitions. [2022-01-10 04:10:02,076 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 296 transitions. Word has length 13 [2022-01-10 04:10:02,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:02,076 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 296 transitions. [2022-01-10 04:10:02,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-01-10 04:10:02,076 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 296 transitions. [2022-01-10 04:10:02,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 04:10:02,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:02,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:02,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:02,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:02,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:02,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:02,285 INFO L85 PathProgramCache]: Analyzing trace with hash 705160648, now seen corresponding path program 1 times [2022-01-10 04:10:02,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:02,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556775500] [2022-01-10 04:10:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:02,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:02,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:02,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:02,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 04:10:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:02,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:10:02,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:02,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:02,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556775500] [2022-01-10 04:10:02,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556775500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:02,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:02,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:10:02,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467209445] [2022-01-10 04:10:02,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:02,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:10:02,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:02,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:10:02,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:02,524 INFO L87 Difference]: Start difference. First operand 201 states and 296 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-01-10 04:10:02,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:02,733 INFO L93 Difference]: Finished difference Result 323 states and 461 transitions. [2022-01-10 04:10:02,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:10:02,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 19 [2022-01-10 04:10:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:02,736 INFO L225 Difference]: With dead ends: 323 [2022-01-10 04:10:02,737 INFO L226 Difference]: Without dead ends: 268 [2022-01-10 04:10:02,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:02,738 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 360 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:02,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [360 Valid, 394 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-10 04:10:02,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 252. [2022-01-10 04:10:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 215 states have (on average 1.4325581395348836) internal successors, (308), 218 states have internal predecessors, (308), 26 states have call successors, (26), 11 states have call predecessors, (26), 10 states have return successors, (27), 25 states have call predecessors, (27), 18 states have call successors, (27) [2022-01-10 04:10:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 361 transitions. [2022-01-10 04:10:02,775 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 361 transitions. Word has length 19 [2022-01-10 04:10:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:02,775 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 361 transitions. [2022-01-10 04:10:02,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2022-01-10 04:10:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 361 transitions. [2022-01-10 04:10:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 04:10:02,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:02,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:02,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:02,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:02,988 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:02,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:02,988 INFO L85 PathProgramCache]: Analyzing trace with hash -2016043499, now seen corresponding path program 1 times [2022-01-10 04:10:02,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887101910] [2022-01-10 04:10:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:02,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:02,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:02,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:02,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 04:10:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:03,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:03,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:03,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:03,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:03,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:03,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887101910] [2022-01-10 04:10:03,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887101910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:03,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:03,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:03,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275636448] [2022-01-10 04:10:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:03,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:03,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:03,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:03,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:03,115 INFO L87 Difference]: Start difference. First operand 252 states and 361 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-01-10 04:10:03,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:03,139 INFO L93 Difference]: Finished difference Result 411 states and 569 transitions. [2022-01-10 04:10:03,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:03,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2022-01-10 04:10:03,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:03,142 INFO L225 Difference]: With dead ends: 411 [2022-01-10 04:10:03,142 INFO L226 Difference]: Without dead ends: 312 [2022-01-10 04:10:03,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:03,145 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 242 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:03,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 360 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:03,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-01-10 04:10:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 290. [2022-01-10 04:10:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 255 states have (on average 1.419607843137255) internal successors, (362), 256 states have internal predecessors, (362), 22 states have call successors, (22), 11 states have call predecessors, (22), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2022-01-10 04:10:03,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 410 transitions. [2022-01-10 04:10:03,160 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 410 transitions. Word has length 18 [2022-01-10 04:10:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:03,160 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 410 transitions. [2022-01-10 04:10:03,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-01-10 04:10:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 410 transitions. [2022-01-10 04:10:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 04:10:03,165 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:03,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:03,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:03,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:03,374 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash 2075722554, now seen corresponding path program 1 times [2022-01-10 04:10:03,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:03,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867154114] [2022-01-10 04:10:03,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:03,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:03,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:03,376 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:03,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 04:10:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:03,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 04:10:03,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:03,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:03,536 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:03,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867154114] [2022-01-10 04:10:03,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867154114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:03,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:03,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:10:03,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214709273] [2022-01-10 04:10:03,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:03,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:10:03,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:03,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:10:03,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:03,538 INFO L87 Difference]: Start difference. First operand 290 states and 410 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:10:03,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:03,639 INFO L93 Difference]: Finished difference Result 293 states and 412 transitions. [2022-01-10 04:10:03,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:10:03,640 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-01-10 04:10:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:03,642 INFO L225 Difference]: With dead ends: 293 [2022-01-10 04:10:03,642 INFO L226 Difference]: Without dead ends: 289 [2022-01-10 04:10:03,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:03,643 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 278 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:03,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 443 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-01-10 04:10:03,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2022-01-10 04:10:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 255 states have (on average 1.411764705882353) internal successors, (360), 255 states have internal predecessors, (360), 21 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2022-01-10 04:10:03,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 407 transitions. [2022-01-10 04:10:03,655 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 407 transitions. Word has length 29 [2022-01-10 04:10:03,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:03,655 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 407 transitions. [2022-01-10 04:10:03,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 04:10:03,655 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 407 transitions. [2022-01-10 04:10:03,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 04:10:03,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:03,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:03,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:03,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:03,857 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:03,857 INFO L85 PathProgramCache]: Analyzing trace with hash -889185583, now seen corresponding path program 1 times [2022-01-10 04:10:03,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:03,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131916286] [2022-01-10 04:10:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:03,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:03,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:03,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:03,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 04:10:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:03,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:10:03,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:04,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:04,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:04,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:04,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131916286] [2022-01-10 04:10:04,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131916286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:04,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:04,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:10:04,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191414297] [2022-01-10 04:10:04,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:04,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:10:04,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:04,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:10:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:04,067 INFO L87 Difference]: Start difference. First operand 289 states and 407 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-01-10 04:10:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:04,187 INFO L93 Difference]: Finished difference Result 315 states and 437 transitions. [2022-01-10 04:10:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:10:04,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 33 [2022-01-10 04:10:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:04,189 INFO L225 Difference]: With dead ends: 315 [2022-01-10 04:10:04,189 INFO L226 Difference]: Without dead ends: 306 [2022-01-10 04:10:04,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:04,190 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 300 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:04,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 459 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:04,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-10 04:10:04,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 301. [2022-01-10 04:10:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 267 states have (on average 1.404494382022472) internal successors, (375), 266 states have internal predecessors, (375), 21 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2022-01-10 04:10:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 422 transitions. [2022-01-10 04:10:04,202 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 422 transitions. Word has length 33 [2022-01-10 04:10:04,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:04,202 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 422 transitions. [2022-01-10 04:10:04,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-01-10 04:10:04,202 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 422 transitions. [2022-01-10 04:10:04,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 04:10:04,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:04,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:04,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:04,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:04,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:04,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:04,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2121154083, now seen corresponding path program 1 times [2022-01-10 04:10:04,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:04,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710202436] [2022-01-10 04:10:04,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:04,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:04,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:04,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 04:10:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:04,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:10:04,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:04,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:04,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:04,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:04,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710202436] [2022-01-10 04:10:04,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710202436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:04,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:04,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:10:04,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255730410] [2022-01-10 04:10:04,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:04,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:10:04,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:04,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:10:04,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:04,602 INFO L87 Difference]: Start difference. First operand 301 states and 422 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2022-01-10 04:10:04,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:04,700 INFO L93 Difference]: Finished difference Result 311 states and 430 transitions. [2022-01-10 04:10:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:10:04,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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 34 [2022-01-10 04:10:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:04,702 INFO L225 Difference]: With dead ends: 311 [2022-01-10 04:10:04,702 INFO L226 Difference]: Without dead ends: 306 [2022-01-10 04:10:04,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:04,702 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 294 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:04,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 459 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:04,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-01-10 04:10:04,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 301. [2022-01-10 04:10:04,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 267 states have (on average 1.400749063670412) internal successors, (374), 266 states have internal predecessors, (374), 21 states have call successors, (21), 11 states have call predecessors, (21), 12 states have return successors, (26), 23 states have call predecessors, (26), 16 states have call successors, (26) [2022-01-10 04:10:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 421 transitions. [2022-01-10 04:10:04,729 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 421 transitions. Word has length 34 [2022-01-10 04:10:04,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:04,729 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 421 transitions. [2022-01-10 04:10:04,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 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) [2022-01-10 04:10:04,729 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 421 transitions. [2022-01-10 04:10:04,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 04:10:04,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:04,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:04,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:04,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:04,935 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1780979361, now seen corresponding path program 1 times [2022-01-10 04:10:04,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:04,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11654387] [2022-01-10 04:10:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:04,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:04,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:04,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:04,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 04:10:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:05,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:05,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:05,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:05,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:05,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11654387] [2022-01-10 04:10:05,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11654387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:05,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:05,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:05,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258786189] [2022-01-10 04:10:05,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:05,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:05,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:05,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:05,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:05,051 INFO L87 Difference]: Start difference. First operand 301 states and 421 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) 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) [2022-01-10 04:10:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:05,070 INFO L93 Difference]: Finished difference Result 340 states and 460 transitions. [2022-01-10 04:10:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) 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 34 [2022-01-10 04:10:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:05,072 INFO L225 Difference]: With dead ends: 340 [2022-01-10 04:10:05,072 INFO L226 Difference]: Without dead ends: 282 [2022-01-10 04:10:05,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:05,073 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 80 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:05,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 524 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:05,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-10 04:10:05,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 268. [2022-01-10 04:10:05,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 236 states have (on average 1.3898305084745763) internal successors, (328), 235 states have internal predecessors, (328), 19 states have call successors, (19), 10 states have call predecessors, (19), 12 states have return successors, (23), 22 states have call predecessors, (23), 14 states have call successors, (23) [2022-01-10 04:10:05,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 370 transitions. [2022-01-10 04:10:05,083 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 370 transitions. Word has length 34 [2022-01-10 04:10:05,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:05,084 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 370 transitions. [2022-01-10 04:10:05,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) 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) [2022-01-10 04:10:05,084 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 370 transitions. [2022-01-10 04:10:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 04:10:05,085 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:05,085 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:05,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:05,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:05,292 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:05,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:05,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2069817079, now seen corresponding path program 1 times [2022-01-10 04:10:05,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:05,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347192006] [2022-01-10 04:10:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:05,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:05,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:05,293 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:05,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 04:10:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:05,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:10:05,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:05,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:05,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:05,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347192006] [2022-01-10 04:10:05,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347192006] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:05,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:05,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:10:05,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21485365] [2022-01-10 04:10:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:05,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:10:05,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:10:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:05,457 INFO L87 Difference]: Start difference. First operand 268 states and 370 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-01-10 04:10:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:05,570 INFO L93 Difference]: Finished difference Result 307 states and 418 transitions. [2022-01-10 04:10:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:10:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 34 [2022-01-10 04:10:05,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:05,571 INFO L225 Difference]: With dead ends: 307 [2022-01-10 04:10:05,571 INFO L226 Difference]: Without dead ends: 268 [2022-01-10 04:10:05,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:05,572 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 285 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:05,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 421 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-10 04:10:05,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2022-01-10 04:10:05,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 236 states have (on average 1.38135593220339) internal successors, (326), 235 states have internal predecessors, (326), 19 states have call successors, (19), 10 states have call predecessors, (19), 12 states have return successors, (23), 22 states have call predecessors, (23), 14 states have call successors, (23) [2022-01-10 04:10:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 368 transitions. [2022-01-10 04:10:05,583 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 368 transitions. Word has length 34 [2022-01-10 04:10:05,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:05,584 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 368 transitions. [2022-01-10 04:10:05,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2022-01-10 04:10:05,584 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 368 transitions. [2022-01-10 04:10:05,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 04:10:05,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:05,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:05,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 04:10:05,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:05,792 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:05,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:05,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1120484039, now seen corresponding path program 1 times [2022-01-10 04:10:05,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:05,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1022192799] [2022-01-10 04:10:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:05,792 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:05,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:05,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:05,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 04:10:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:05,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:05,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:05,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:05,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:05,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1022192799] [2022-01-10 04:10:05,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1022192799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:05,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:05,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:05,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536146907] [2022-01-10 04:10:05,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:05,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:05,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:05,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:05,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:05,925 INFO L87 Difference]: Start difference. First operand 268 states and 368 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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) [2022-01-10 04:10:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:05,944 INFO L93 Difference]: Finished difference Result 286 states and 390 transitions. [2022-01-10 04:10:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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 35 [2022-01-10 04:10:05,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:05,946 INFO L225 Difference]: With dead ends: 286 [2022-01-10 04:10:05,946 INFO L226 Difference]: Without dead ends: 232 [2022-01-10 04:10:05,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:05,948 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 233 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:05,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 259 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:05,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-01-10 04:10:05,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 210. [2022-01-10 04:10:05,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 186 states have (on average 1.39247311827957) internal successors, (259), 189 states have internal predecessors, (259), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 287 transitions. [2022-01-10 04:10:05,957 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 287 transitions. Word has length 35 [2022-01-10 04:10:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:05,958 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 287 transitions. [2022-01-10 04:10:05,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 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) [2022-01-10 04:10:05,958 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 287 transitions. [2022-01-10 04:10:05,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 04:10:05,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:05,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:05,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:06,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:06,165 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:06,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:06,166 INFO L85 PathProgramCache]: Analyzing trace with hash -152990302, now seen corresponding path program 1 times [2022-01-10 04:10:06,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:06,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716934868] [2022-01-10 04:10:06,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:06,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:06,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:06,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:06,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 04:10:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:06,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:06,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:06,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:06,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:06,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716934868] [2022-01-10 04:10:06,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716934868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:06,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:06,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:06,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365330473] [2022-01-10 04:10:06,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:06,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:06,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:06,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:06,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:06,285 INFO L87 Difference]: Start difference. First operand 210 states and 287 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:06,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:06,326 INFO L93 Difference]: Finished difference Result 234 states and 316 transitions. [2022-01-10 04:10:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:06,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-01-10 04:10:06,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:06,328 INFO L225 Difference]: With dead ends: 234 [2022-01-10 04:10:06,328 INFO L226 Difference]: Without dead ends: 208 [2022-01-10 04:10:06,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:06,328 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 5 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:06,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 470 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:06,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-01-10 04:10:06,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2022-01-10 04:10:06,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 185 states have (on average 1.3837837837837839) internal successors, (256), 187 states have internal predecessors, (256), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:06,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 283 transitions. [2022-01-10 04:10:06,335 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 283 transitions. Word has length 39 [2022-01-10 04:10:06,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:06,335 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 283 transitions. [2022-01-10 04:10:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:06,335 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 283 transitions. [2022-01-10 04:10:06,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 04:10:06,336 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:06,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:06,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:06,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:06,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:06,544 INFO L85 PathProgramCache]: Analyzing trace with hash 143802695, now seen corresponding path program 1 times [2022-01-10 04:10:06,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:06,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862529826] [2022-01-10 04:10:06,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:06,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:06,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:06,545 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:06,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 04:10:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:06,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:10:06,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:06,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:06,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:06,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862529826] [2022-01-10 04:10:06,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862529826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:06,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:06,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 04:10:06,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80526612] [2022-01-10 04:10:06,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:06,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:10:06,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:06,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:10:06,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:10:06,696 INFO L87 Difference]: Start difference. First operand 208 states and 283 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2022-01-10 04:10:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:06,853 INFO L93 Difference]: Finished difference Result 227 states and 304 transitions. [2022-01-10 04:10:06,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:10:06,853 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 37 [2022-01-10 04:10:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:06,854 INFO L225 Difference]: With dead ends: 227 [2022-01-10 04:10:06,854 INFO L226 Difference]: Without dead ends: 207 [2022-01-10 04:10:06,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:10:06,855 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 167 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:06,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 1239 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-01-10 04:10:06,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2022-01-10 04:10:06,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 184 states have (on average 1.3804347826086956) internal successors, (254), 186 states have internal predecessors, (254), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:06,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 281 transitions. [2022-01-10 04:10:06,861 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 281 transitions. Word has length 37 [2022-01-10 04:10:06,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:06,861 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 281 transitions. [2022-01-10 04:10:06,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2022-01-10 04:10:06,862 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 281 transitions. [2022-01-10 04:10:06,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 04:10:06,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:06,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:06,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:07,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:07,069 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1174329782, now seen corresponding path program 1 times [2022-01-10 04:10:07,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378271277] [2022-01-10 04:10:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:07,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:07,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:07,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:07,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 04:10:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:07,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:10:07,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:07,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:07,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:07,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378271277] [2022-01-10 04:10:07,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378271277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:07,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:07,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 04:10:07,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188419335] [2022-01-10 04:10:07,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:07,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:10:07,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:07,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:10:07,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:10:07,245 INFO L87 Difference]: Start difference. First operand 207 states and 281 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-01-10 04:10:07,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:07,338 INFO L93 Difference]: Finished difference Result 226 states and 302 transitions. [2022-01-10 04:10:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 04:10:07,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 38 [2022-01-10 04:10:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:07,340 INFO L225 Difference]: With dead ends: 226 [2022-01-10 04:10:07,340 INFO L226 Difference]: Without dead ends: 206 [2022-01-10 04:10:07,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:10:07,340 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 51 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:07,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1166 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:07,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-01-10 04:10:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2022-01-10 04:10:07,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 183 states have (on average 1.3770491803278688) internal successors, (252), 185 states have internal predecessors, (252), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 279 transitions. [2022-01-10 04:10:07,347 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 279 transitions. Word has length 38 [2022-01-10 04:10:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:07,347 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 279 transitions. [2022-01-10 04:10:07,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-01-10 04:10:07,347 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 279 transitions. [2022-01-10 04:10:07,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-01-10 04:10:07,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:07,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:07,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-01-10 04:10:07,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:07,554 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash -461855094, now seen corresponding path program 1 times [2022-01-10 04:10:07,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851192277] [2022-01-10 04:10:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:07,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:07,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:07,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:07,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 04:10:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:07,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 04:10:07,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:07,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:07,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:07,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:07,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851192277] [2022-01-10 04:10:07,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851192277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:07,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:07,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 04:10:07,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110882171] [2022-01-10 04:10:07,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:07,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 04:10:07,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:07,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 04:10:07,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 04:10:07,695 INFO L87 Difference]: Start difference. First operand 206 states and 279 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-01-10 04:10:07,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:07,783 INFO L93 Difference]: Finished difference Result 218 states and 291 transitions. [2022-01-10 04:10:07,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 04:10:07,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 38 [2022-01-10 04:10:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:07,785 INFO L225 Difference]: With dead ends: 218 [2022-01-10 04:10:07,785 INFO L226 Difference]: Without dead ends: 186 [2022-01-10 04:10:07,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:10:07,786 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 51 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:07,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1152 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-01-10 04:10:07,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-01-10 04:10:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 163 states have (on average 1.3742331288343559) internal successors, (224), 165 states have internal predecessors, (224), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:07,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 251 transitions. [2022-01-10 04:10:07,793 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 251 transitions. Word has length 38 [2022-01-10 04:10:07,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:07,793 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 251 transitions. [2022-01-10 04:10:07,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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) [2022-01-10 04:10:07,794 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 251 transitions. [2022-01-10 04:10:07,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-01-10 04:10:07,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:07,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:07,803 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 04:10:08,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:08,001 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash 793066956, now seen corresponding path program 1 times [2022-01-10 04:10:08,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:08,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661281342] [2022-01-10 04:10:08,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:08,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:08,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:08,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:08,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 04:10:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:08,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 04:10:08,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:08,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:08,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:08,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661281342] [2022-01-10 04:10:08,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661281342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:08,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:08,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 04:10:08,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851810136] [2022-01-10 04:10:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:08,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 04:10:08,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 04:10:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:08,132 INFO L87 Difference]: Start difference. First operand 186 states and 251 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:08,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:08,145 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2022-01-10 04:10:08,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 04:10:08,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 2 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 41 [2022-01-10 04:10:08,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:08,146 INFO L225 Difference]: With dead ends: 210 [2022-01-10 04:10:08,146 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 04:10:08,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 04:10:08,147 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 16 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:08,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 892 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 04:10:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-01-10 04:10:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 156 states have (on average 1.3717948717948718) internal successors, (214), 158 states have internal predecessors, (214), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:08,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 241 transitions. [2022-01-10 04:10:08,155 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 241 transitions. Word has length 41 [2022-01-10 04:10:08,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:08,155 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 241 transitions. [2022-01-10 04:10:08,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:08,155 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 241 transitions. [2022-01-10 04:10:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 04:10:08,155 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:08,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:08,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:08,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:08,363 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -814724848, now seen corresponding path program 1 times [2022-01-10 04:10:08,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:08,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602860581] [2022-01-10 04:10:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:08,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:08,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:08,365 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:08,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 04:10:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:08,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 04:10:08,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:08,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:08,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:08,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:08,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602860581] [2022-01-10 04:10:08,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602860581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:08,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:08,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 04:10:08,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366434126] [2022-01-10 04:10:08,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:08,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 04:10:08,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:08,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 04:10:08,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 04:10:08,564 INFO L87 Difference]: Start difference. First operand 179 states and 241 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-10 04:10:08,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:08,701 INFO L93 Difference]: Finished difference Result 209 states and 276 transitions. [2022-01-10 04:10:08,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 04:10:08,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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 [2022-01-10 04:10:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:08,703 INFO L225 Difference]: With dead ends: 209 [2022-01-10 04:10:08,703 INFO L226 Difference]: Without dead ends: 178 [2022-01-10 04:10:08,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:10:08,704 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 238 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:08,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 672 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-10 04:10:08,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-01-10 04:10:08,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 155 states have (on average 1.3612903225806452) internal successors, (211), 157 states have internal predecessors, (211), 15 states have call successors, (15), 8 states have call predecessors, (15), 7 states have return successors, (12), 12 states have call predecessors, (12), 11 states have call successors, (12) [2022-01-10 04:10:08,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 238 transitions. [2022-01-10 04:10:08,710 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 238 transitions. Word has length 42 [2022-01-10 04:10:08,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:08,710 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 238 transitions. [2022-01-10 04:10:08,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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) [2022-01-10 04:10:08,710 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 238 transitions. [2022-01-10 04:10:08,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 04:10:08,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:08,710 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:08,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:08,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:08,918 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 2035173904, now seen corresponding path program 1 times [2022-01-10 04:10:08,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:08,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212006263] [2022-01-10 04:10:08,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:08,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:08,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:08,920 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:08,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 04:10:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:08,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:10:08,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:09,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:09,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:09,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212006263] [2022-01-10 04:10:09,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212006263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:09,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:09,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:10:09,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958853585] [2022-01-10 04:10:09,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:09,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:10:09,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:10:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:10:09,107 INFO L87 Difference]: Start difference. First operand 178 states and 238 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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) [2022-01-10 04:10:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:09,273 INFO L93 Difference]: Finished difference Result 256 states and 334 transitions. [2022-01-10 04:10:09,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:10:09,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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 [2022-01-10 04:10:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:09,274 INFO L225 Difference]: With dead ends: 256 [2022-01-10 04:10:09,274 INFO L226 Difference]: Without dead ends: 218 [2022-01-10 04:10:09,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:10:09,275 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 208 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:09,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 1183 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-10 04:10:09,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2022-01-10 04:10:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.3496932515337423) internal successors, (220), 166 states have internal predecessors, (220), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-01-10 04:10:09,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 249 transitions. [2022-01-10 04:10:09,282 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 249 transitions. Word has length 42 [2022-01-10 04:10:09,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:09,282 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 249 transitions. [2022-01-10 04:10:09,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 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) [2022-01-10 04:10:09,282 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 249 transitions. [2022-01-10 04:10:09,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 04:10:09,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:09,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:09,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:09,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:09,490 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:09,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:09,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1557380430, now seen corresponding path program 1 times [2022-01-10 04:10:09,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:09,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18209054] [2022-01-10 04:10:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:09,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:09,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:09,492 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:09,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 04:10:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:09,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:09,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:09,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:09,608 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:09,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18209054] [2022-01-10 04:10:09,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18209054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:09,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:09,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:09,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318591595] [2022-01-10 04:10:09,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:09,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:09,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:09,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:09,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:09,609 INFO L87 Difference]: Start difference. First operand 187 states and 249 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:09,619 INFO L93 Difference]: Finished difference Result 230 states and 294 transitions. [2022-01-10 04:10:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:09,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 48 [2022-01-10 04:10:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:09,620 INFO L225 Difference]: With dead ends: 230 [2022-01-10 04:10:09,620 INFO L226 Difference]: Without dead ends: 187 [2022-01-10 04:10:09,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:09,620 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:09,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 425 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:09,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-10 04:10:09,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-01-10 04:10:09,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.343558282208589) internal successors, (219), 166 states have internal predecessors, (219), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-01-10 04:10:09,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2022-01-10 04:10:09,628 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 48 [2022-01-10 04:10:09,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:09,629 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2022-01-10 04:10:09,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:09,629 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2022-01-10 04:10:09,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 04:10:09,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:09,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:09,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:09,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:09,836 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:09,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:09,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2069341144, now seen corresponding path program 1 times [2022-01-10 04:10:09,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:09,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558792233] [2022-01-10 04:10:09,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:09,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:09,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:09,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:09,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 04:10:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:09,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 04:10:09,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:09,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:09,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:09,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558792233] [2022-01-10 04:10:09,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558792233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:09,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:09,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 04:10:09,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912088086] [2022-01-10 04:10:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:09,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 04:10:09,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:09,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 04:10:09,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:09,971 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:09,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:09,980 INFO L93 Difference]: Finished difference Result 230 states and 293 transitions. [2022-01-10 04:10:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 04:10:09,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-01-10 04:10:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:09,981 INFO L225 Difference]: With dead ends: 230 [2022-01-10 04:10:09,981 INFO L226 Difference]: Without dead ends: 187 [2022-01-10 04:10:09,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 04:10:09,982 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 0 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:09,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 04:10:09,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-01-10 04:10:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2022-01-10 04:10:09,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 163 states have (on average 1.3312883435582823) internal successors, (217), 166 states have internal predecessors, (217), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2022-01-10 04:10:09,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 246 transitions. [2022-01-10 04:10:09,988 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 246 transitions. Word has length 49 [2022-01-10 04:10:09,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:09,988 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 246 transitions. [2022-01-10 04:10:09,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 246 transitions. [2022-01-10 04:10:09,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 04:10:09,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:09,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:10,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:10,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:10,196 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:10,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1996954586, now seen corresponding path program 1 times [2022-01-10 04:10:10,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:10,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894946680] [2022-01-10 04:10:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:10,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:10,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:10,198 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:10,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 04:10:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:10,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 04:10:10,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:10,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:10,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:10,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:10,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894946680] [2022-01-10 04:10:10,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894946680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:10,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:10,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 04:10:10,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877765725] [2022-01-10 04:10:10,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:10,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:10:10,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:10:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:10:10,408 INFO L87 Difference]: Start difference. First operand 187 states and 246 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:10,574 INFO L93 Difference]: Finished difference Result 235 states and 302 transitions. [2022-01-10 04:10:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:10:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 2 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 49 [2022-01-10 04:10:10,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:10,575 INFO L225 Difference]: With dead ends: 235 [2022-01-10 04:10:10,575 INFO L226 Difference]: Without dead ends: 221 [2022-01-10 04:10:10,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:10:10,576 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 135 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:10,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1662 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:10,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-01-10 04:10:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 190. [2022-01-10 04:10:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 165 states have (on average 1.3272727272727274) internal successors, (219), 168 states have internal predecessors, (219), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-01-10 04:10:10,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 249 transitions. [2022-01-10 04:10:10,582 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 249 transitions. Word has length 49 [2022-01-10 04:10:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:10,582 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 249 transitions. [2022-01-10 04:10:10,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:10,582 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 249 transitions. [2022-01-10 04:10:10,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 04:10:10,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:10,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:10,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:10,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:10,795 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 630189029, now seen corresponding path program 1 times [2022-01-10 04:10:10,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:10,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266866804] [2022-01-10 04:10:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:10,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:10,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:10,797 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:10,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 04:10:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:10,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 04:10:10,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:11,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:11,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:11,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266866804] [2022-01-10 04:10:11,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266866804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:11,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 04:10:11,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18065133] [2022-01-10 04:10:11,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:11,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 04:10:11,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:11,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 04:10:11,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:11,030 INFO L87 Difference]: Start difference. First operand 190 states and 249 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 04:10:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:11,099 INFO L93 Difference]: Finished difference Result 214 states and 278 transitions. [2022-01-10 04:10:11,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 04:10:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-01-10 04:10:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:11,101 INFO L225 Difference]: With dead ends: 214 [2022-01-10 04:10:11,101 INFO L226 Difference]: Without dead ends: 190 [2022-01-10 04:10:11,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 04:10:11,101 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 189 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:11,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 366 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:11,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-01-10 04:10:11,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2022-01-10 04:10:11,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 165 states have (on average 1.3151515151515152) internal successors, (217), 168 states have internal predecessors, (217), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (15), 13 states have call predecessors, (15), 11 states have call successors, (15) [2022-01-10 04:10:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2022-01-10 04:10:11,108 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 45 [2022-01-10 04:10:11,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:11,108 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2022-01-10 04:10:11,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-01-10 04:10:11,108 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2022-01-10 04:10:11,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:10:11,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:11,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:11,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:11,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:11,316 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1843151008, now seen corresponding path program 1 times [2022-01-10 04:10:11,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:11,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160710817] [2022-01-10 04:10:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:11,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:11,318 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:11,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 04:10:11,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:11,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:10:11,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:11,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:11,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:11,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160710817] [2022-01-10 04:10:11,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160710817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:11,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:11,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:10:11,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219638368] [2022-01-10 04:10:11,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:11,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:10:11,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:11,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:10:11,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:10:11,505 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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) [2022-01-10 04:10:11,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:11,617 INFO L93 Difference]: Finished difference Result 239 states and 306 transitions. [2022-01-10 04:10:11,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:10:11,617 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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 [2022-01-10 04:10:11,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:11,618 INFO L225 Difference]: With dead ends: 239 [2022-01-10 04:10:11,618 INFO L226 Difference]: Without dead ends: 202 [2022-01-10 04:10:11,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:10:11,618 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 30 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:11,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1420 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:11,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-01-10 04:10:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2022-01-10 04:10:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 170 states have (on average 1.3058823529411765) internal successors, (222), 174 states have internal predecessors, (222), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-01-10 04:10:11,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 255 transitions. [2022-01-10 04:10:11,625 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 255 transitions. Word has length 43 [2022-01-10 04:10:11,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:11,626 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 255 transitions. [2022-01-10 04:10:11,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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) [2022-01-10 04:10:11,626 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 255 transitions. [2022-01-10 04:10:11,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:10:11,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:11,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:11,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:11,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:11,836 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:11,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2056869664, now seen corresponding path program 1 times [2022-01-10 04:10:11,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:11,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739306353] [2022-01-10 04:10:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:11,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:11,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:11,837 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:11,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 04:10:11,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:11,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:10:11,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:12,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:12,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:12,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:12,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739306353] [2022-01-10 04:10:12,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739306353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:12,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:12,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:10:12,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024167278] [2022-01-10 04:10:12,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:12,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:10:12,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:12,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:10:12,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:10:12,033 INFO L87 Difference]: Start difference. First operand 196 states and 255 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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) [2022-01-10 04:10:12,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:12,134 INFO L93 Difference]: Finished difference Result 220 states and 280 transitions. [2022-01-10 04:10:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:10:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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 [2022-01-10 04:10:12,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:12,136 INFO L225 Difference]: With dead ends: 220 [2022-01-10 04:10:12,137 INFO L226 Difference]: Without dead ends: 191 [2022-01-10 04:10:12,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:10:12,137 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 30 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:12,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1425 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:12,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-01-10 04:10:12,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2022-01-10 04:10:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.31055900621118) internal successors, (211), 164 states have internal predecessors, (211), 14 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2022-01-10 04:10:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 239 transitions. [2022-01-10 04:10:12,143 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 239 transitions. Word has length 43 [2022-01-10 04:10:12,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:12,143 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 239 transitions. [2022-01-10 04:10:12,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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) [2022-01-10 04:10:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 239 transitions. [2022-01-10 04:10:12,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 04:10:12,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:12,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:12,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 04:10:12,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:12,350 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:12,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:12,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1523737831, now seen corresponding path program 1 times [2022-01-10 04:10:12,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:12,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228552093] [2022-01-10 04:10:12,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:12,351 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:12,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:12,353 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:12,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 04:10:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 04:10:12,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:12,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:12,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:12,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228552093] [2022-01-10 04:10:12,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228552093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:12,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:12,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 04:10:12,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198044785] [2022-01-10 04:10:12,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:12,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 04:10:12,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:12,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 04:10:12,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 04:10:12,534 INFO L87 Difference]: Start difference. First operand 185 states and 239 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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) [2022-01-10 04:10:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:12,681 INFO L93 Difference]: Finished difference Result 213 states and 268 transitions. [2022-01-10 04:10:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 04:10:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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 [2022-01-10 04:10:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:12,683 INFO L225 Difference]: With dead ends: 213 [2022-01-10 04:10:12,683 INFO L226 Difference]: Without dead ends: 198 [2022-01-10 04:10:12,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-10 04:10:12,683 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 180 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:12,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 1142 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-01-10 04:10:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 185. [2022-01-10 04:10:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 161 states have (on average 1.31055900621118) internal successors, (211), 164 states have internal predecessors, (211), 14 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2022-01-10 04:10:12,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 238 transitions. [2022-01-10 04:10:12,689 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 238 transitions. Word has length 43 [2022-01-10 04:10:12,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:12,689 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 238 transitions. [2022-01-10 04:10:12,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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) [2022-01-10 04:10:12,689 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 238 transitions. [2022-01-10 04:10:12,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 04:10:12,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:12,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:12,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:12,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:12,895 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 961215296, now seen corresponding path program 1 times [2022-01-10 04:10:12,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:12,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630103020] [2022-01-10 04:10:12,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:12,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:12,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:12,897 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:12,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 04:10:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:12,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 04:10:12,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:13,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:13,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:13,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630103020] [2022-01-10 04:10:13,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630103020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:13,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:13,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 04:10:13,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323639242] [2022-01-10 04:10:13,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:13,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:10:13,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:10:13,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:10:13,126 INFO L87 Difference]: Start difference. First operand 185 states and 238 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:13,254 INFO L93 Difference]: Finished difference Result 214 states and 270 transitions. [2022-01-10 04:10:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:10:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 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 [2022-01-10 04:10:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:13,255 INFO L225 Difference]: With dead ends: 214 [2022-01-10 04:10:13,255 INFO L226 Difference]: Without dead ends: 200 [2022-01-10 04:10:13,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:10:13,255 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 16 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:13,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1828 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:13,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-01-10 04:10:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 191. [2022-01-10 04:10:13,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 166 states have (on average 1.3012048192771084) internal successors, (216), 170 states have internal predecessors, (216), 14 states have call successors, (14), 8 states have call predecessors, (14), 10 states have return successors, (16), 12 states have call predecessors, (16), 10 states have call successors, (16) [2022-01-10 04:10:13,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 246 transitions. [2022-01-10 04:10:13,261 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 246 transitions. Word has length 50 [2022-01-10 04:10:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:13,261 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 246 transitions. [2022-01-10 04:10:13,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:13,262 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 246 transitions. [2022-01-10 04:10:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 04:10:13,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:13,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:13,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:13,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:13,469 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:13,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:13,469 INFO L85 PathProgramCache]: Analyzing trace with hash -625368320, now seen corresponding path program 1 times [2022-01-10 04:10:13,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:13,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35429806] [2022-01-10 04:10:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:13,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:13,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:13,471 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:13,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 04:10:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 04:10:13,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-10 04:10:13,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 04:10:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 04:10:13,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 04:10:13,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 04:10:13,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35429806] [2022-01-10 04:10:13,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35429806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 04:10:13,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 04:10:13,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 04:10:13,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382353646] [2022-01-10 04:10:13,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 04:10:13,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 04:10:13,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 04:10:13,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 04:10:13,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-10 04:10:13,677 INFO L87 Difference]: Start difference. First operand 191 states and 246 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:13,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 04:10:13,809 INFO L93 Difference]: Finished difference Result 203 states and 258 transitions. [2022-01-10 04:10:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 04:10:13,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 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 [2022-01-10 04:10:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 04:10:13,810 INFO L225 Difference]: With dead ends: 203 [2022-01-10 04:10:13,810 INFO L226 Difference]: Without dead ends: 167 [2022-01-10 04:10:13,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-01-10 04:10:13,811 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 16 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 04:10:13,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1844 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 04:10:13,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-10 04:10:13,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 158. [2022-01-10 04:10:13,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 136 states have (on average 1.2794117647058822) internal successors, (174), 139 states have internal predecessors, (174), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2022-01-10 04:10:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 198 transitions. [2022-01-10 04:10:13,816 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 198 transitions. Word has length 50 [2022-01-10 04:10:13,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 04:10:13,816 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 198 transitions. [2022-01-10 04:10:13,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-10 04:10:13,816 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 198 transitions. [2022-01-10 04:10:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 04:10:13,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 04:10:13,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:13,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 04:10:14,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:14,024 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 04:10:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 04:10:14,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2019746375, now seen corresponding path program 1 times [2022-01-10 04:10:14,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 04:10:14,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238253632] [2022-01-10 04:10:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 04:10:14,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 04:10:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 04:10:14,026 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 04:10:14,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 04:10:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 04:10:14,083 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-10 04:10:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-10 04:10:14,154 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-01-10 04:10:14,154 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-10 04:10:14,155 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 04:10:14,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 04:10:14,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 04:10:14,366 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 04:10:14,368 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-10 04:10:14,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 04:10:14 BoogieIcfgContainer [2022-01-10 04:10:14,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-10 04:10:14,436 INFO L158 Benchmark]: Toolchain (without parser) took 13787.65ms. Allocated memory was 178.3MB in the beginning and 251.7MB in the end (delta: 73.4MB). Free memory was 126.6MB in the beginning and 135.8MB in the end (delta: -9.3MB). Peak memory consumption was 64.8MB. Max. memory is 8.0GB. [2022-01-10 04:10:14,436 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-10 04:10:14,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 294.24ms. Allocated memory is still 178.3MB. Free memory was 126.4MB in the beginning and 146.9MB in the end (delta: -20.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-10 04:10:14,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.87ms. Allocated memory is still 178.3MB. Free memory was 146.9MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 04:10:14,436 INFO L158 Benchmark]: Boogie Preprocessor took 33.13ms. Allocated memory is still 178.3MB. Free memory was 143.3MB in the beginning and 140.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-01-10 04:10:14,436 INFO L158 Benchmark]: RCFGBuilder took 578.61ms. Allocated memory is still 178.3MB. Free memory was 140.7MB in the beginning and 109.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-01-10 04:10:14,437 INFO L158 Benchmark]: TraceAbstraction took 12818.89ms. Allocated memory was 178.3MB in the beginning and 251.7MB in the end (delta: 73.4MB). Free memory was 108.7MB in the beginning and 135.8MB in the end (delta: -27.1MB). Peak memory consumption was 47.3MB. Max. memory is 8.0GB. [2022-01-10 04:10:14,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 294.24ms. Allocated memory is still 178.3MB. Free memory was 126.4MB in the beginning and 146.9MB in the end (delta: -20.5MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 54.87ms. Allocated memory is still 178.3MB. Free memory was 146.9MB in the beginning and 143.8MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.13ms. Allocated memory is still 178.3MB. Free memory was 143.3MB in the beginning and 140.7MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 578.61ms. Allocated memory is still 178.3MB. Free memory was 140.7MB in the beginning and 109.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. * TraceAbstraction took 12818.89ms. Allocated memory was 178.3MB in the beginning and 251.7MB in the end (delta: 73.4MB). Free memory was 108.7MB in the beginning and 135.8MB in the end (delta: -27.1MB). Peak memory consumption was 47.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1013]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, UNLOADED=0] [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L326] CALL _BLAST_init() [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L326] RET _BLAST_init() [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L337] COND TRUE irp_choice == 0 [L338] pirp__IoStatus__Status = -1073741637 [L339] myStatus = -1073741637 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L342] CALL stub_driver_init() [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L342] RET stub_driver_init() [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L388] CALL, EXPR KbFilter_PnP(devobj, pirp) [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L106] COND FALSE !(irpStack__MinorFunction == 0) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L109] COND FALSE !(irpStack__MinorFunction == 23) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L112] COND TRUE irpStack__MinorFunction == 2 VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L236] devExt__Removed = 1 VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, devExt__Removed=1, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L237] COND TRUE s == NP [L238] s = SKIP1 VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, devExt__Removed=1, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__Tail__Overlay__CurrentStackLocation=0, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, devExt__Removed=1, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L247] CALL IofCallDriver(devExt__TopOfStack, Irp) VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L489] COND FALSE !(\read(compRegistered)) VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=2147483648, tmp_ndt_7=1, UNLOADED=0] [L518] returnVal2 = -1073741823 VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, returnVal2=3221225473, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=2147483648, tmp_ndt_7=1, UNLOADED=0] [L528] COND FALSE !(s == NP) VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, returnVal2=3221225473, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=2147483648, tmp_ndt_7=1, UNLOADED=0] [L532] COND FALSE !(s == MPR1) VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, returnVal2=3221225473, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=2147483648, tmp_ndt_7=1, UNLOADED=0] [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, returnVal2=3221225473, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=2147483648, tmp_ndt_7=1, UNLOADED=0] [L551] return (returnVal2); VAL [\old(DeviceObject)=11, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(s)=3, \old(setEventCalled)=0, \result=-1073741823, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=11, DevicePowerState=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lcontext=12, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, returnVal2=3221225473, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, tmp_ndt_6=2147483648, tmp_ndt_7=1, UNLOADED=0] [L247] RET IofCallDriver(devExt__TopOfStack, Irp) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, devExt__Removed=1, devExt__TopOfStack=11, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IofCallDriver(devExt__TopOfStack, Irp)=-1073741823, IPC=7, Irp=9, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L248] status = 0 VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, devExt__Removed=1, devExt__TopOfStack=11, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L290] return (status); VAL [\old(DeviceObject)=8, \old(Irp)=9, \result=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, devExt=10, devExt__Removed=1, devExt__TopOfStack=11, DeviceObject=8, DeviceObject__DeviceExtension=10, DevicePowerState=1, Executive=0, IPC=7, Irp=9, Irp__CurrentLocation=1, Irp__Tail__Overlay__CurrentStackLocation=1, irpStack=0, irpStack__MinorFunction=2, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, UNLOADED=0] [L388] RET, EXPR KbFilter_PnP(devobj, pirp) [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L420] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L428] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L429] COND TRUE status != -1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L430] COND FALSE !(s != SKIP2) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L440] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L447] COND FALSE !(s == DC) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L452] COND TRUE status != lowerDriverReturn VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, tmp_ndt_1=2147483648, tmp_ndt_2=0, tmp_ndt_3=3, UNLOADED=0] [L453] CALL errorFn() VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L1013] reach_error() VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 209 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.7s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3599 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3582 mSDsluCounter, 21046 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15036 mSDsCounter, 180 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2139 IncrementalHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 180 mSolverCounterUnsat, 6010 mSDtfsCounter, 2139 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 957 GetRequests, 828 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=301occurred in iteration=5, InterpolantAutomatonStates: 142, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 25 MinimizatonAttempts, 189 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 990 NumberOfCodeBlocks, 990 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 921 ConstructedInterpolants, 0 QuantifiedInterpolants, 2918 SizeOfPredicates, 65 NumberOfNonLiveVariables, 3367 ConjunctsInSsa, 139 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-10 04:10:14,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...