/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-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 14:50:19,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 14:50:19,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 14:50:19,196 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 14:50:19,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 14:50:19,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 14:50:19,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 14:50:19,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 14:50:19,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 14:50:19,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 14:50:19,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 14:50:19,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 14:50:19,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 14:50:19,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 14:50:19,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 14:50:19,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 14:50:19,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 14:50:19,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 14:50:19,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 14:50:19,265 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 14:50:19,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 14:50:19,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 14:50:19,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 14:50:19,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 14:50:19,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-16 14:50:19,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-16 14:50:19,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-16 14:50:19,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-16 14:50:19,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-16 14:50:19,291 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-16 14:50:19,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 14:50:19,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 14:50:19,294 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 14:50:19,295 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 14:50:19,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 14:50:19,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 14:50:19,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 14:50:19,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 14:50:19,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 14:50:19,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 14:50:19,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 14:50:19,301 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 14:50:19,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 14:50:19,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 14:50:19,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 14:50:19,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 14:50:19,363 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 14:50:19,363 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 14:50:19,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 14:50:19,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 14:50:19,367 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 14:50:19,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 14:50:19,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 14:50:19,368 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 14:50:19,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 14:50:19,369 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 14:50:19,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 14:50:19,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 14:50:19,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 14:50:19,370 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 14:50:19,370 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 14:50:19,370 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 14:50:19,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 14:50:19,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 14:50:19,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 14:50:19,371 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 14:50:19,371 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 14:50:19,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 14:50:19,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:50:19,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 14:50:19,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 14:50:19,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 14:50:19,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 14:50:19,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 14:50:19,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 14:50:19,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 14:50:19,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 14:50:19,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 14:50:19,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 14:50:19,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 14:50:19,809 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 14:50:19,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-1.c [2022-10-16 14:50:19,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef98221af/ccd6487672724d158618f012543ca97a/FLAG974c05675 [2022-10-16 14:50:20,814 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 14:50:20,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers/kbfiltr.i.cil-1.c [2022-10-16 14:50:20,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef98221af/ccd6487672724d158618f012543ca97a/FLAG974c05675 [2022-10-16 14:50:20,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef98221af/ccd6487672724d158618f012543ca97a [2022-10-16 14:50:20,963 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 14:50:20,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 14:50:20,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 14:50:20,975 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 14:50:20,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 14:50:20,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:20" (1/1) ... [2022-10-16 14:50:20,983 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac7393a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:20, skipping insertion in model container [2022-10-16 14:50:20,983 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:50:20" (1/1) ... [2022-10-16 14:50:20,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 14:50:21,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 14:50:21,734 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-1.c[61982,61995] [2022-10-16 14:50:21,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:50:21,948 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 14:50:22,006 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-1.c[61982,61995] [2022-10-16 14:50:22,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 14:50:22,186 INFO L208 MainTranslator]: Completed translation [2022-10-16 14:50:22,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:50:22 WrapperNode [2022-10-16 14:50:22,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 14:50:22,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 14:50:22,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 14:50:22,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 14:50:22,198 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 14:50:22,242 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 14:50:22,345 INFO L138 Inliner]: procedures = 104, calls = 286, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 1021 [2022-10-16 14:50:22,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 14:50:22,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 14:50:22,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 14:50:22,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 14:50:22,358 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 14:50:22,358 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 14:50:22,371 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 14:50:22,371 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 14:50:22,418 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 14:50:22,429 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 14:50:22,437 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 14:50:22,444 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 14:50:22,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 14:50:22,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 14:50:22,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 14:50:22,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 14:50:22,467 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 14:50:22,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 14:50:22,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:22,509 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 14:50:22,529 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 14:50:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2022-10-16 14:50:22,576 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2022-10-16 14:50:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-10-16 14:50:22,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-10-16 14:50:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-10-16 14:50:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 14:50:22,577 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-10-16 14:50:22,579 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-10-16 14:50:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 14:50:22,580 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2022-10-16 14:50:22,581 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2022-10-16 14:50:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-10-16 14:50:22,581 INFO L138 BoogieDeclarations]: Found implementation of procedure malloc [2022-10-16 14:50:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-10-16 14:50:22,581 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-10-16 14:50:22,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 14:50:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 14:50:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-16 14:50:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-10-16 14:50:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-10-16 14:50:22,582 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2022-10-16 14:50:22,582 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2022-10-16 14:50:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-16 14:50:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 14:50:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 14:50:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-10-16 14:50:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 14:50:22,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 14:50:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2022-10-16 14:50:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2022-10-16 14:50:22,994 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 14:50:22,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 14:50:23,113 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,157 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2022-10-16 14:50:23,157 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2022-10-16 14:50:23,242 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,244 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,246 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,252 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,256 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,261 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:23,263 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-10-16 14:50:24,362 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##82: assume !false; [2022-10-16 14:50:24,363 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##81: assume false; [2022-10-16 14:50:24,363 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume false; [2022-10-16 14:50:24,363 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##34: assume !false; [2022-10-16 14:50:24,363 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##33: assume false; [2022-10-16 14:50:24,363 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2022-10-16 14:50:24,364 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2022-10-16 14:50:24,364 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##138: assume !false; [2022-10-16 14:50:24,364 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-10-16 14:50:24,364 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-10-16 14:50:24,364 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##155: assume !false; [2022-10-16 14:50:24,365 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume false; [2022-10-16 14:50:24,365 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume false; [2022-10-16 14:50:24,365 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !false; [2022-10-16 14:50:24,397 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 14:50:24,410 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 14:50:24,411 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-16 14:50:24,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:24 BoogieIcfgContainer [2022-10-16 14:50:24,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 14:50:24,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 14:50:24,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 14:50:24,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 14:50:24,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:50:20" (1/3) ... [2022-10-16 14:50:24,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734f9a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:24, skipping insertion in model container [2022-10-16 14:50:24,425 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 14:50:24,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734f9a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:50:24, skipping insertion in model container [2022-10-16 14:50:24,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:50:24" (3/3) ... [2022-10-16 14:50:24,427 INFO L112 eAbstractionObserver]: Analyzing ICFG kbfiltr.i.cil-1.c [2022-10-16 14:50:24,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 14:50:24,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-10-16 14:50:24,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 14:50:24,567 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;@4536c3ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 14:50:24,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-10-16 14:50:24,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 269 states, 216 states have (on average 1.5925925925925926) internal successors, (344), 247 states have internal predecessors, (344), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2022-10-16 14:50:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-16 14:50:24,590 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:24,591 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] [2022-10-16 14:50:24,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:24,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:24,600 INFO L85 PathProgramCache]: Analyzing trace with hash -797834032, now seen corresponding path program 1 times [2022-10-16 14:50:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497719834] [2022-10-16 14:50:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:24,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:25,450 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 14:50:25,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:25,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497719834] [2022-10-16 14:50:25,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497719834] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:25,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:25,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:50:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923105202] [2022-10-16 14:50:25,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:50:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:25,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:50:25,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:50:25,500 INFO L87 Difference]: Start difference. First operand has 269 states, 216 states have (on average 1.5925925925925926) internal successors, (344), 247 states have internal predecessors, (344), 30 states have call successors, (30), 8 states have call predecessors, (30), 8 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 14:50:25,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:25,847 INFO L93 Difference]: Finished difference Result 535 states and 825 transitions. [2022-10-16 14:50:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 14:50:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 21 [2022-10-16 14:50:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:25,877 INFO L225 Difference]: With dead ends: 535 [2022-10-16 14:50:25,878 INFO L226 Difference]: Without dead ends: 139 [2022-10-16 14:50:25,901 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 14:50:25,914 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 35 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:25,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1118 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 14:50:25,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-16 14:50:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-10-16 14:50:26,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.5210084033613445) internal successors, (181), 134 states have internal predecessors, (181), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 187 transitions. [2022-10-16 14:50:26,010 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 187 transitions. Word has length 21 [2022-10-16 14:50:26,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:26,010 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 187 transitions. [2022-10-16 14:50:26,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 14:50:26,013 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 187 transitions. [2022-10-16 14:50:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-16 14:50:26,015 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:26,016 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] [2022-10-16 14:50:26,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 14:50:26,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:26,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:26,029 INFO L85 PathProgramCache]: Analyzing trace with hash 811413551, now seen corresponding path program 1 times [2022-10-16 14:50:26,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:26,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206150011] [2022-10-16 14:50:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:26,333 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 14:50:26,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:26,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206150011] [2022-10-16 14:50:26,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206150011] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:26,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:26,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 14:50:26,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691245146] [2022-10-16 14:50:26,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:26,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 14:50:26,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 14:50:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 14:50:26,338 INFO L87 Difference]: Start difference. First operand 139 states and 187 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 14:50:26,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:26,508 INFO L93 Difference]: Finished difference Result 263 states and 356 transitions. [2022-10-16 14:50:26,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 14:50:26,513 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), 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 26 [2022-10-16 14:50:26,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:26,515 INFO L225 Difference]: With dead ends: 263 [2022-10-16 14:50:26,516 INFO L226 Difference]: Without dead ends: 138 [2022-10-16 14:50:26,517 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 14:50:26,518 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 1 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:26,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 552 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:50:26,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-10-16 14:50:26,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-10-16 14:50:26,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 118 states have (on average 1.5169491525423728) internal successors, (179), 133 states have internal predecessors, (179), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:26,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2022-10-16 14:50:26,533 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 26 [2022-10-16 14:50:26,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:26,534 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2022-10-16 14:50:26,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 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 14:50:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2022-10-16 14:50:26,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-16 14:50:26,536 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:26,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:26,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 14:50:26,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:26,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:26,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1080622268, now seen corresponding path program 1 times [2022-10-16 14:50:26,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:26,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020517319] [2022-10-16 14:50:26,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:26,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 14:50:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:27,322 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 14:50:27,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:27,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020517319] [2022-10-16 14:50:27,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020517319] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 14:50:27,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 14:50:27,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 14:50:27,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542149712] [2022-10-16 14:50:27,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 14:50:27,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 14:50:27,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:27,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 14:50:27,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:50:27,329 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-10-16 14:50:27,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:27,351 INFO L93 Difference]: Finished difference Result 260 states and 352 transitions. [2022-10-16 14:50:27,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 14:50:27,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 31 [2022-10-16 14:50:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:27,355 INFO L225 Difference]: With dead ends: 260 [2022-10-16 14:50:27,355 INFO L226 Difference]: Without dead ends: 139 [2022-10-16 14:50:27,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 14:50:27,364 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 366 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 14:50:27,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 366 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:50:27,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-10-16 14:50:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2022-10-16 14:50:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 119 states have (on average 1.5126050420168067) internal successors, (180), 134 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:27,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2022-10-16 14:50:27,397 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 31 [2022-10-16 14:50:27,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:27,397 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2022-10-16 14:50:27,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2022-10-16 14:50:27,398 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2022-10-16 14:50:27,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-16 14:50:27,399 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:27,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:27,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 14:50:27,400 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:27,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:27,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1133271152, now seen corresponding path program 1 times [2022-10-16 14:50:27,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:27,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861752006] [2022-10-16 14:50:27,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:27,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:28,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 14:50:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:28,098 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 14:50:28,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:28,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861752006] [2022-10-16 14:50:28,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861752006] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:28,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400700409] [2022-10-16 14:50:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:28,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:28,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:28,108 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 14:50:28,121 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 14:50:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 14:50:28,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:50:28,808 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 14:50:28,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:50:28,860 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 14:50:28,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400700409] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:50:28,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:50:28,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-10-16 14:50:28,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343261426] [2022-10-16 14:50:28,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:50:28,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 14:50:28,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:28,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 14:50:28,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-10-16 14:50:28,863 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:28,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:28,957 INFO L93 Difference]: Finished difference Result 263 states and 357 transitions. [2022-10-16 14:50:28,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 14:50:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-10-16 14:50:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:28,960 INFO L225 Difference]: With dead ends: 263 [2022-10-16 14:50:28,960 INFO L226 Difference]: Without dead ends: 142 [2022-10-16 14:50:28,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2022-10-16 14:50:28,962 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:28,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 730 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 14:50:28,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-10-16 14:50:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2022-10-16 14:50:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 122 states have (on average 1.5) internal successors, (183), 137 states have internal predecessors, (183), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 189 transitions. [2022-10-16 14:50:28,973 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 189 transitions. Word has length 32 [2022-10-16 14:50:28,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:28,973 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 189 transitions. [2022-10-16 14:50:28,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 189 transitions. [2022-10-16 14:50:28,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-10-16 14:50:28,975 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:28,975 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:29,016 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 14:50:29,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:29,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:29,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1673770564, now seen corresponding path program 2 times [2022-10-16 14:50:29,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126702030] [2022-10-16 14:50:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:29,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 14:50:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:29,982 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 14:50:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:29,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126702030] [2022-10-16 14:50:29,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126702030] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:29,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103104553] [2022-10-16 14:50:29,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 14:50:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:29,986 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 14:50:30,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 14:50:34,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 14:50:34,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 14:50:34,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 827 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-16 14:50:34,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 14:50:34,789 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 14:50:34,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 14:50:34,944 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 14:50:34,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103104553] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 14:50:34,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 14:50:34,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2022-10-16 14:50:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519347116] [2022-10-16 14:50:34,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 14:50:34,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 14:50:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 14:50:34,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 14:50:34,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2022-10-16 14:50:34,951 INFO L87 Difference]: Start difference. First operand 142 states and 189 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2022-10-16 14:50:36,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 14:50:36,148 INFO L93 Difference]: Finished difference Result 269 states and 366 transitions. [2022-10-16 14:50:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-16 14:50:36,149 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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 [2022-10-16 14:50:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 14:50:36,150 INFO L225 Difference]: With dead ends: 269 [2022-10-16 14:50:36,150 INFO L226 Difference]: Without dead ends: 148 [2022-10-16 14:50:36,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=149, Invalid=231, Unknown=0, NotChecked=0, Total=380 [2022-10-16 14:50:36,152 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 130 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 14:50:36,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 964 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 14:50:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-10-16 14:50:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-10-16 14:50:36,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 128 states have (on average 1.4765625) internal successors, (189), 143 states have internal predecessors, (189), 5 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-16 14:50:36,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 195 transitions. [2022-10-16 14:50:36,166 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 195 transitions. Word has length 35 [2022-10-16 14:50:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 14:50:36,167 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 195 transitions. [2022-10-16 14:50:36,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 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) [2022-10-16 14:50:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 195 transitions. [2022-10-16 14:50:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-10-16 14:50:36,168 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 14:50:36,169 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 14:50:36,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 14:50:36,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:36,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [KbFilter_CreateCloseErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, KbFilter_CreateCloseErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-16 14:50:36,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 14:50:36,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1972499140, now seen corresponding path program 3 times [2022-10-16 14:50:36,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 14:50:36,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839094654] [2022-10-16 14:50:36,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 14:50:36,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 14:50:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:37,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-10-16 14:50:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 14:50:37,653 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 14:50:37,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 14:50:37,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839094654] [2022-10-16 14:50:37,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839094654] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 14:50:37,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153876997] [2022-10-16 14:50:37,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 14:50:37,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 14:50:37,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 14:50:37,656 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 14:50:37,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process