/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:50:19,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:50:19,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:50:19,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:50:19,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:50:19,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:50:19,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:50:19,719 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:50:19,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:50:19,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:50:19,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:50:19,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:50:19,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:50:19,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:50:19,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:50:19,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:50:19,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:50:19,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:50:19,761 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:50:19,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:50:19,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:50:19,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:50:19,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:50:19,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:50:19,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:50:19,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:50:19,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:50:19,782 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:50:19,783 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:50:19,784 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:50:19,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:50:19,785 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:50:19,786 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:50:19,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:50:19,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:50:19,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:50:19,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:50:19,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:50:19,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:50:19,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:50:19,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:50:19,792 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 14:50:19,820 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:50:19,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:50:19,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:50:19,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:50:19,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:50:19,823 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:50:19,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:50:19,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:50:19,824 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:50:19,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:50:19,824 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:50:19,825 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:50:19,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:50:19,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:50:19,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:50:19,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:50:19,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:50:19,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:50:19,826 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:50:19,826 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:50:19,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:50:19,827 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:50:19,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:50:19,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:50:19,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:50:19,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:50:19,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:50:19,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:50:19,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:50:19,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:50:19,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:50:19,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:50:19,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:50:19,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:50:20,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:50:20,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:50:20,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:50:20,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:50:20,262 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:50:20,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2022-10-16 14:50:20,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570d312eb/452aa0e965c5447793359be963fb9848/FLAG69e71f7c9 [2022-10-16 14:50:21,231 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:50:21,232 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c [2022-10-16 14:50:21,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570d312eb/452aa0e965c5447793359be963fb9848/FLAG69e71f7c9 [2022-10-16 14:50:21,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/570d312eb/452aa0e965c5447793359be963fb9848 [2022-10-16 14:50:21,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:50:21,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:50:21,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:50:21,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:50:21,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:50:21,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:21" (1/1) ... [2022-10-16 14:50:21,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43a16a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:21, skipping insertion in model container [2022-10-16 14:50:21,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:21" (1/1) ... [2022-10-16 14:50:21,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:50:21,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:50:21,948 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-10-16 14:50:22,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:50:22,248 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:50:22,300 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-2.c[62209,62222] [2022-10-16 14:50:22,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:50:22,502 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:50:22,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22 WrapperNode [2022-10-16 14:50:22,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:50:22,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:50:22,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:50:22,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:50:22,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,698 INFO L138 Inliner]: procedures = 109, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1096 [2022-10-16 14:50:22,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:50:22,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:50:22,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:50:22,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:50:22,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:50:22,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:50:22,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:50:22,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:50:22,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (1/1) ... [2022-10-16 14:50:22,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:50:22,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:22,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 14:50:22,943 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 [2022-10-16 14:50:22,990 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-10-16 14:50:22,990 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-10-16 14:50:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 14:50:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 14:50:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 14:50:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:50:22,991 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-10-16 14:50:22,993 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-10-16 14:50:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:50:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-10-16 14:50:22,995 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-10-16 14:50:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-10-16 14:50:22,995 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-10-16 14:50:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-16 14:50:22,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:50:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:50:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:50:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-10-16 14:50:22,996 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-10-16 14:50:22,996 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-10-16 14:50:22,996 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-10-16 14:50:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:50:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:50:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:50:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 14:50:22,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:50:22,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:50:22,998 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-10-16 14:50:22,998 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-10-16 14:50:23,423 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:50:23,426 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:50:23,539 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,620 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-10-16 14:50:23,621 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-10-16 14:50:23,737 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,741 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,743 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,749 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,752 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,758 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,761 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:26,821 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##83: assume false; [2022-10-16 14:50:26,821 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume !false; [2022-10-16 14:50:26,821 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2022-10-16 14:50:26,822 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2022-10-16 14:50:26,822 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##139: assume false; [2022-10-16 14:50:26,822 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume !false; [2022-10-16 14:50:26,822 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2022-10-16 14:50:26,822 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2022-10-16 14:50:26,822 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2022-10-16 14:50:26,823 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume !false; [2022-10-16 14:50:26,823 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2022-10-16 14:50:26,823 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##156: assume false; [2022-10-16 14:50:26,823 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##114: assume !false; [2022-10-16 14:50:26,823 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##113: assume false; [2022-10-16 14:50:26,848 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:50:26,860 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:50:26,860 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 14:50:26,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:26 BoogieIcfgContainer [2022-10-16 14:50:26,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:50:26,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:50:26,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:50:26,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:50:26,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:50:21" (1/3) ... [2022-10-16 14:50:26,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6e5b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:26, skipping insertion in model container [2022-10-16 14:50:26,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22" (2/3) ... [2022-10-16 14:50:26,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6e5b77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:26, skipping insertion in model container [2022-10-16 14:50:26,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:26" (3/3) ... [2022-10-16 14:50:26,874 INFO L112 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-2.c [2022-10-16 14:50:26,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:50:26,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-10-16 14:50:26,964 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:50:26,973 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3ad7a3fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:50:26,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-10-16 14:50:26,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 215 states have (on average 1.5953488372093023) internal successors, (343), 246 states have internal predecessors, (343), 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) [2022-10-16 14:50:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 14:50:26,994 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:26,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:26,996 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:27,002 INFO L85 PathProgramCache]: Analyzing trace with hash 816322432, now seen corresponding path program 1 times [2022-10-16 14:50:27,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:27,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462962796] [2022-10-16 14:50:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:27,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:27,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:27,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462962796] [2022-10-16 14:50:27,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462962796] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:27,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:27,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 14:50:27,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483606545] [2022-10-16 14:50:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:27,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 14:50:27,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 14:50:27,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 14:50:27,726 INFO L87 Difference]: Start difference. First operand has 266 states, 215 states have (on average 1.5953488372093023) internal successors, (343), 246 states have internal predecessors, (343), 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 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2022-10-16 14:50:27,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:27,796 INFO L93 Difference]: Finished difference Result 526 states and 809 transitions. [2022-10-16 14:50:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 14:50:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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 23 [2022-10-16 14:50:27,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:27,809 INFO L225 Difference]: With dead ends: 526 [2022-10-16 14:50:27,809 INFO L226 Difference]: Without dead ends: 136 [2022-10-16 14:50:27,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 14:50:27,821 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:27,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:50:27,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-10-16 14:50:27,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-10-16 14:50:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 133 states have internal predecessors, (180), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:50:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2022-10-16 14:50:27,874 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 23 [2022-10-16 14:50:27,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:27,875 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2022-10-16 14:50:27,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 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) [2022-10-16 14:50:27,876 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2022-10-16 14:50:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 14:50:27,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:27,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:27,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:50:27,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1326018, now seen corresponding path program 1 times [2022-10-16 14:50:27,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:27,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515188427] [2022-10-16 14:50:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:27,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:28,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515188427] [2022-10-16 14:50:28,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515188427] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:28,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:28,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:50:28,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539278577] [2022-10-16 14:50:28,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:50:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:28,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:50:28,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:50:28,463 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-10-16 14:50:29,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:29,888 INFO L93 Difference]: Finished difference Result 348 states and 481 transitions. [2022-10-16 14:50:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:50:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23 [2022-10-16 14:50:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:29,908 INFO L225 Difference]: With dead ends: 348 [2022-10-16 14:50:29,909 INFO L226 Difference]: Without dead ends: 232 [2022-10-16 14:50:29,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:50:29,911 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 270 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:29,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 669 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-10-16 14:50:29,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-10-16 14:50:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 138. [2022-10-16 14:50:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 120 states have (on average 1.5166666666666666) internal successors, (182), 135 states have internal predecessors, (182), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:50:29,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 186 transitions. [2022-10-16 14:50:29,931 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 186 transitions. Word has length 23 [2022-10-16 14:50:29,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:29,931 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 186 transitions. [2022-10-16 14:50:29,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-10-16 14:50:29,932 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 186 transitions. [2022-10-16 14:50:29,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-16 14:50:29,933 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:29,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:29,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:50:29,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:29,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:29,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1599249282, now seen corresponding path program 1 times [2022-10-16 14:50:29,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:29,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887730455] [2022-10-16 14:50:29,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:29,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:30,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:30,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887730455] [2022-10-16 14:50:30,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887730455] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:30,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:30,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:50:30,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240017179] [2022-10-16 14:50:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:30,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:50:30,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:30,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:50:30,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:50:30,321 INFO L87 Difference]: Start difference. First operand 138 states and 186 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-10-16 14:50:31,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 14:50:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:31,571 INFO L93 Difference]: Finished difference Result 254 states and 345 transitions. [2022-10-16 14:50:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:50:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 23 [2022-10-16 14:50:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:31,573 INFO L225 Difference]: With dead ends: 254 [2022-10-16 14:50:31,573 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 14:50:31,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 14:50:31,579 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 2 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:31,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 542 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-10-16 14:50:31,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 14:50:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-10-16 14:50:31,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 133 states have internal predecessors, (179), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:50:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 183 transitions. [2022-10-16 14:50:31,592 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 183 transitions. Word has length 23 [2022-10-16 14:50:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:31,592 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 183 transitions. [2022-10-16 14:50:31,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2022-10-16 14:50:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 183 transitions. [2022-10-16 14:50:31,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-16 14:50:31,594 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:31,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:50:31,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:31,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash 809637511, now seen corresponding path program 1 times [2022-10-16 14:50:31,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:31,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254744564] [2022-10-16 14:50:31,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:31,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:32,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:32,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:32,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254744564] [2022-10-16 14:50:32,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254744564] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:32,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:32,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:50:32,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511821294] [2022-10-16 14:50:32,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:32,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:50:32,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:50:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:50:32,980 INFO L87 Difference]: Start difference. First operand 136 states and 183 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-10-16 14:50:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:32,997 INFO L93 Difference]: Finished difference Result 258 states and 350 transitions. [2022-10-16 14:50:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:50:32,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 28 [2022-10-16 14:50:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:33,000 INFO L225 Difference]: With dead ends: 258 [2022-10-16 14:50:33,000 INFO L226 Difference]: Without dead ends: 137 [2022-10-16 14:50:33,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:50:33,015 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 0 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:33,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 362 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:50:33,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-10-16 14:50:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2022-10-16 14:50:33,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 134 states have internal predecessors, (180), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:50:33,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2022-10-16 14:50:33,043 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 28 [2022-10-16 14:50:33,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:33,043 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2022-10-16 14:50:33,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-10-16 14:50:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2022-10-16 14:50:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-10-16 14:50:33,045 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:33,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:33,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 14:50:33,045 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:33,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1084364149, now seen corresponding path program 1 times [2022-10-16 14:50:33,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:33,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507856249] [2022-10-16 14:50:33,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:33,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:34,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:34,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507856249] [2022-10-16 14:50:34,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507856249] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081018369] [2022-10-16 14:50:34,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:34,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:34,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:50:34,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 14:50:34,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:34,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 14:50:34,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:50:35,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:35,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:50:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:35,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081018369] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:50:35,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:50:35,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-16 14:50:35,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921826307] [2022-10-16 14:50:35,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:50:35,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:50:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:50:35,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:50:35,119 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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) [2022-10-16 14:50:35,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:35,207 INFO L93 Difference]: Finished difference Result 261 states and 355 transitions. [2022-10-16 14:50:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 14:50:35,208 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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 29 [2022-10-16 14:50:35,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:35,209 INFO L225 Difference]: With dead ends: 261 [2022-10-16 14:50:35,209 INFO L226 Difference]: Without dead ends: 140 [2022-10-16 14:50:35,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:50:35,214 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 130 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:35,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 412 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:50:35,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-10-16 14:50:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-10-16 14:50:35,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 122 states have (on average 1.5) internal successors, (183), 137 states have internal predecessors, (183), 4 states have call successors, (4), 2 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 14:50:35,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 187 transitions. [2022-10-16 14:50:35,244 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 187 transitions. Word has length 29 [2022-10-16 14:50:35,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:35,245 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 187 transitions. [2022-10-16 14:50:35,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 7 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) [2022-10-16 14:50:35,245 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 187 transitions. [2022-10-16 14:50:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 14:50:35,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:35,251 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:35,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 14:50:35,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:35,465 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:35,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:35,466 INFO L85 PathProgramCache]: Analyzing trace with hash 43579271, now seen corresponding path program 2 times [2022-10-16 14:50:35,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:35,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912567714] [2022-10-16 14:50:35,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:35,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:36,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:36,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912567714] [2022-10-16 14:50:36,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912567714] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:36,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904274957] [2022-10-16 14:50:36,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:50:36,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:36,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:36,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:50:36,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process